Trip in the White Stone direction and Berezovaya Mountain in November

Forest road near Zuzelka
Forest road near Zuzelka

Yesterday I rode on the bicycle in the direction of White Stone mountain near Zuzelka village and to Berezovaya mountain. The snowy and cold morning was, temperature was near -3 degrees on Celsius. Icing was on the roads, covered by snow, so, in the city I rode mostly on the sidewalks and with slow speed on the road. I reached Zuzleka without problems, village itself is located on the hills near Azov-mountain and there is ability to warm-up on them before upcoming trip. According to the map, to the west from it road goes on, and to the north from it another small branch leads, under the snow I rode past it; next strayed for a while on the crossroads in the forest and arrived to quarry to the west from Zuzelka. Search of the right path to White Stone in the knee-deep snow would took too much time and I would not arrived in time before dark to the place, which I wanted to visit the most in this day; so, I’ll search right path to White Stone closer to Spring, when snow-crust will be solid or when snow will melt. From the quarry I navigated to village and from it rode in the direction of Azov mountain.

Forest road near Zuzelka
Forest road near Zuzelka

On the way I met skier : “Sportive-hello!” – “Hello!” – and people, who exercised Scandinavian walk, road in this area is slowly covered by snow. According to the map, after 2 km after turn to Azov mountain road is crossed by river Polevaya – here is it, crosses it in 3 places with 3 its riverbeds, next road branch goes to the north – here is it; next another 2 – 3 km and branch goes on to the south to Berezovaya mountain. Near it I met 2 Nivas ( Russian Jeeps ) and 1 minibus and hunters with guns, part of them stood and talked about their businesses and part stood aside. I turned to the south, from here to the mountain is around 5 – 6 km, half of this way – is relatively good ground road with packed snow, on which still not frozen puddles are located periodically, here in the forest it is still warm enough. It is still rideable on the bicycle. Then clay road goes on with sides chest or sometimes neck tall, that is rolled only by tracked bulldozer : it seems, that at summer rainy time only such kind of transport and people on foot or on horses will be able to ride here. Part of clay and puddles still not frozen and is covered by snow, first I drenched my left boot, after some time – right one, I went further.

Rocks near Zuzelka quarry
Rocks near Zuzelka quarry

Berezovaya mountain

Is the highest peak of the Ufaley ridge and its northern conclusion, its height is 609 m above the sea level.

On the way to mountain open areas are located, on which through some times weakening snowfall its silhouette can be seen in distance; road is crossed by other ones, which go from east to west, after approximately 3 – 4 km after turn bulldozer road goes to the east, I walked on it for around 1 km, but it does not lead to mountain, as Berezovaya should be very close to the forest path; in the south-west direction very snow-covered road goes on from this moment. On the way I met old wooded pillars, with signs on them, it seems, that they signify forest areas and directions. Above the forest helicopter flew, very close and very low, and flew somewhere in the north-western direction. And so Berezovaya peak shown oneself, it is very tall, even taller than She-wolf mountain. Ahead only snow-puddles go on with trodden tracks somewhere there in the deep, I went on them for a while, looking for the rolled way to mountain, but there is no one. So, I turned from the road and went to mountain through the snowdrifts on the meadow, carrying my bicycle on the shoulder. On the meadow snow goes up to hips, so I turned to the small spruce forest on its side, snowdrifts are smaller in it, and went to mountain through it. Uphill to Berezovaya with bicycle on the shoulder through snowdrifts – is a thing to remember, no gyms are needed after it.

Rocks near Zuzelka quarry
Rocks near Zuzelka quarry
It’s sorry about She-wolf,
she’s chained by the roads and ski lifts,
enforced she is,
a weaklings ascend on it,
those, who not deserve it,
so sorry mountain.

On the snow there are only dog’s ( unlikely ) or wolf’s footprints, so bicycle can be left in forest, it will not be stolen, and, even if there would be other people in the forest, then unlikely somebody, except me, would have been wanted to carry it on oneself through the snowdrifts. So, upwalking almost to the rocks of mountain, I mounted bicycle to tree with lock, took off bag with tea, food and equipment from it and went to the mountain on the light. On its top from ground relatively big rocks look out. In the northern and eastern directions its slopes are not very steep and they are grown with trees. There are lots of birches on its peak – from here is the name ( Berezovaya mountain is the Birch mountain in Russian ). The biggest rocks are located on its south-western sides and on these sides its slopes go sharply down, opening view on tenths of km around : on the open areas near it after forest cuts or after fires, lake and open areas in the distance. I ascended on all rocks and made photos and videos, then went to the biggest rock, strong wind blew periodically, which pluck off snow from trees and rocks and covered everything in snowy mist. I stood on the rock and made photos and let this view inside of me, sky cleared slightly for a while, when wind dispersed clouds, weather was changing : it was snowing, and then Sun glimpses shown oneself for a while. I descended from rock, slightly further from wind, wet boots, pants, mittens and bag was covered with ice on the wind, it additionally kept warmth and protected from the wind. I took with me raincoat and this time was equipped much better, than at the rides to Shunuth and to the She-wolf, and almost did not felt any cold or wind. Only hands frozen on the wind, when I made photos and videos.

Quarry near Zuzelka
Quarry near Zuzelka

I drank hot tea from the thermos, warmed photo camera in pocket of my jacket : on the wind its battery frozen and stopped to power it, so, periodically in photos and videos recording it rejected to work. After warming I ascended again on the biggest rocks, recorded video and made a few more photos, stood and looked on this view for another 20 – 30 minutes. It is time to go home. Sunset hours are already on the mountain. I descended from the rocks, made some more its photos, recorded video and on my footprints started to descend down and to the bicycle. Horse waited for me there, where I left it, metal lock covered with ice and started to stick to the hands, when I unlocked bicycle. I put my bag on the shoulder, took bicycle under armpit and went down to the road. On the way I met not frozen puddles in grooves of meadow and the forest edge, quickly enough I arrived to cars prints in the forest, by that time they were covered with snow even more.

Road to Berezovaya mountain
Road to Berezovaya mountain

After puddles in the snowdrifts both wheels was being covered with snow-icy mass and frontal wheel periodically stopped, I rotated it and plucked ice layer from the rim and went further; after some time I unfastened frontal V-brake, because wheel completely iced. There was need to took off frontal wing before trip, because wet snow accumulated under it, which turned in the ice, and stopped movement, so there was need to push bicycle with strength ahead. When I managed to bulldozer road, dusk descended on the forest, road here is straight, so one cannot be strayed here, on the way I drenched both boots a couple of times more, but did not payed attention to this anymore, even more : in the snow in forest on the foots water on the contrary warmed feet slightly. When I arrived to rolled ground road with scattering of stones, it became dark, I went on feet here also, because by that time it was already strongly covered with snow, in the darkness its more or less rolled parts was not visible and ice stopped movement. Under sky light trees was clearly visible to the sides of a way, and after some time I managed to road between Zuzelka and Large Lavrovka, scratched ice from frontal wheel, rotated wing sideways, so that wheel would pluck off ice from under it, walked uphill and rode further to the home; on the way I met cars, that moved in the Large Lavrovka direction, in their lights it was visible, that road is already strongly covered with snow. Without problems I arrived to Azov mountain, then to Zuzelka and then to the Polevskoy.

Road to Berezovaya mountain
Road to Berezovaya mountain

I rode to home, took off my coat, boots and shoelaces on them was icy, so, I walked for around 10 minutes in the boots at home, giving them ability to melt. Then took off them, hung icy armor in the bedroom to melt and to dry after it, drank hot tea and ate food. Made some home businesses and went to sleep. Ye-e-es, see you on the next bicycles event!

Forest road to Berezovaya mountain
Forest road to Berezovaya mountain
Forest on the side of road to Berezovaya mountain
Forest on the side of road to Berezovaya mountain
Road to Berezovaya mountain
Road to Berezovaya mountain
Berezovaya mountain
Berezovaya mountain
Open area in front of Berezovaya mountain
Open area in front of Berezovaya mountain
On the peak of Berezovaya mountain
On the peak of Berezovaya mountain
Birch forest on the peak of mountain
Birch forest on the peak of mountain
Birch forest on the peak of mountain
Birch forest on the peak of mountain
Rocks on the peak of Berezovaya mountain
Rocks on the peak of Berezovaya mountain
Forest on the peak of mountain
Forest on the peak of mountain
View from the rocks
View from the rocks
Highest rock on the peak of Berezovaya mountain
Highest rock on the peak of Berezovaya mountain
View from the rocks
View from the rocks
View from the rocks
View from the rocks
View from the rocks
View from the rocks
Rocks of Berezovaya mountain
Rocks of Berezovaya mountain

You can see rest of photos here. Tomorrow I’ll upload rest of videos.

Review of external sound card Behringer U-PHORIA UMC204HD with MIDAS preamplifiers for 80 USD

External sound card Behringer U-PHORIA UMC204HD
External sound card Behringer U-PHORIA UMC204HD

Lets review external professional sound card Behringer U-PHORIA UMC204HD. It is designed for studio work and has everything, that is needed for this. Its frontal panel has : combined XLR/TRS ( 1/4″ jack ) inputs for microphone, instrumental Hi-Z or linear work modes ( +48 V phantom power can be switched for them ); amplification level controls, instrumental/linear and Pad switches and clip indicators; TRS ( 1/4″ jack ) output for monitor headphones, their volume control, Direct Monitor switch, stereo and mono switch, main outputs volume control, card work modes selector and input, output, power and phantom power indicators. Its back panel has : USB Type B port, through which it is powered and communicates with computer; MIDI input and output; Kensington Lock slot and phantom power switch; 4 RCA outputs; 2 TRS ( 1/4″ jack ) outputs; and 2 TRS ( 1/4″ jack ) inserts.

External sound card Behringer U-PHORIA UMC204HD ( rear view )
External sound card Behringer U-PHORIA UMC204HD ( rear view )

Inputs of Behringer U-PHORIA UMC204HD have following characteristics : frequency response is 10 Hz – 50 kHz ( 0 / -3 dB ); impedance of microphone inputs is 3 kOhms, of instrumental Hi-Z – 1 MOhm; maximal level of input signal of microphone connectors is -4 dB, of linear is 20 dB and instrumental is -3 dB. Outputs have following characteristics : frequency response 10 Hz – 43 kHz ( 0 / 3 dB ); maximal volume level of signal is 3 dB; dynamic range is 110 dB ( A-weighted ). Inserts specifications are : 100 Ohms Send and 10 kOhms Return impedance; maximal input signal level is 3 dB. All connectors of audio interface are unbalanced.

MIDAS preamplifiers are connected to card’s inputs; it can work with sampling rates up to 192 kHz and with 24 bits per sample precision ( it also supports 44.1, 48, 88.2, 96 and 176.4 kHz frequencies ); card’s body is made from metal and it is eligible to 3-year manufacturer warranty. Behringer U-PHORIA UMC204HD is bundled with codes for DAW Tracktion 4 and different effects and plug-ins downloading. All functions of DAW are located on 1 screen : for sounds recording, tracks editing and mixing; from advanced functions it supports dynamic automation, unlimited tracks amount for work, MIDI signal recording and connection of VST/AU plugins of instruments and effects.

For it drivers for Windows XP, Vista, 7, 8 and newer are released, in Mac OS X it works without additional drivers, with support of ASIO 2.0 and Core Audio interfaces. Via which it tightly integrates with modern DAWs : Cackewalk Sonar, REAPER, Avid Pro Tools, Ableton Live, Steinberg Cubase, FL Studio and others. Device sizes are 46.45 x 185 x 130 mm and mass is 0.6 kg; it is powered only from USB port without additional power adapter input; maximum it draws 2.5 W of energy.

Package contains : Behringer U-PHORIA UMC204HD sound card itself, USB cable, optical disk with drivers, 3-years warranty card and user’s guide. After purchase there is ability to register it on Behringer site for applications and plugins downloading and support receiving in case of device breakings; if nearby from you there is no authorized service-center, then you can directly call manufacturer for audio interface repair or replacement. There is ability to connect to Behringer U-PHORIA UMC204HD microphone and analogue instrument or linear signal, MIDI device and work with them in DAW, which opens wide possibilities for studio music creation and its playback on small concerts and lessons on master-classes. Audio interface’s price is around 80 USD.

As usual : sound cards of Steinberg and Behringer have no competitors and, if professional studio sound card is needed, then there is need to look on devices of these manufacturers. However among other audio interfaces of Steinberg, Behringer, Focusrite, Roland, ESI, M-Audio, Alesis and other companies there are also good devices, which worth attention, when required interface is being chosen.

Behringer – is a company, which was founded in Germany in 1989 year, currently its offices are located in many countries of the world and it is a multinational corporation; main production facilities of Behringer are located in China. Currently it is one of the leading world manufacturers of audio interfaces, microphones, loudspeakers, instruments and other sound devices.

M-Audio Code 49 – stylish and functional MIDI keyboard with assignable controllers

MIDI keyboard M-Audio Code 49
MIDI keyboard M-Audio Code 49

Today we will look on functional MIDI keyboard with interesting design M-Audio Code 49, which controllers are assignable. It has : 49 velocity-sensitive full-size keys with aftertouch function and 4 assignable sensitivity curve areas; assignable XY pad, which allows to control many instrument’s parameters simultaneously; 16 velocity-sensitive drumpads with back-light; 8 assignable knobs; 9 programmable sliders; 9 programmable buttons; and specialized transport control buttons. Also, it has pitch-bend and modulation control wheels, LCD display; inputs for sustain and volume control pedals; USB port for communication with computer and powering; and MIDI input and output with power adapter input, which is used with this kind of connection.

MIDI keyboard M-Audio Code 49 ( rear view )
MIDI keyboard M-Audio Code 49 ( rear view )

Keyboard is bundled with DAW Ableton Live Lite and AIR Music Technology Hybrid 3.0 and Loom software. It works in Windows 7, 8 and 10 and Mac OS X 10.7.5 and newer without additional drivers via Plug and Play technology, in which it tightly integrates with modern DAWs, their instruments and VST plugins : Avid Pro Tools, Ableton Live, Steinberg Cubase, FL Studio, Cackewalk Sonar, REAPER and others. There are also modifications of this keyboard with 25 and 61 keys. Package contains : MIDI keyboard M-Audio Code 49 itself, USB cable, optical disks with software and user’s guide. This is good MIDI keyboard, with wide range of assignable controllers and stylish design, which is worth its money, especially if it will be bought with discount.

Focusrite Scarlett 2i2 – studio audio interface with semi-professional functions

External sound card Focusrite Scarlett 2i2
External sound card Focusrite Scarlett 2i2

Lets review external studio audio interface Focusrite Scarlett 2i2, that is designed for semi-professional work. Its frontal panel has : 2 combined XLR/TRS ( 1/4″ jack ) connectors, which can be switched between linear and Hi-Z modes, switches themselves and amplification level control knobs with back-light; TRS ( 1/4″ jack ) outputs for headphones, their volume control, Direct Monitor switch, volume control of main outputs of sound card, USB connection indicator and phantom power +48 V switch for its inputs. Its back panel has : Kensington Lock slot, USB port, through which it is powered and communicates with computer, and 2 linear balanced TRS ( 1/4″ jack ) outputs.

External sound card Focusrite Scarlett 2i2 ( rear view )
External sound card Focusrite Scarlett 2i2 ( rear view )

Card can work with 96 kHz sampling rate and 24 bits precision; analogue to digital and digital to analogue dynamic ranges are 105 and 104 dB, accordingly; noise level of microphone input is -127 dB, linear input is -104 dB and instrumental is -87 dB. It is bundled with DAW Ableton Live Lite and Focusrite plugins package, its body is made of anodized aluminum. For it drivers are released for Windows XP, Vista, 7, 8 and newer with ASIO 2.0 interface support and Mac OS X with Core Audio interface support, with which it tightly integrates with modern DAWs : FL Studio, Cackewalk Sonar, REAPER, Avid Pro Tools, Ableton Live, Steinberg Cubase and others. Package contains : Focusrite Scarlett 2i2 sound card itself, USB cable, optical disks with drivers and software and user’s guide. All in all, this is a good sound card with semi-professional functions, but for the same price there is ability to buy much better Steinberg and Behringer devices, so, this sound card is recommended for purchase only with big discount.

Review of new Beats Powerbeats2 In-Ear Headphones

Beats Powerbeats2 In-Ear Headphones
Beats Powerbeats2 In-Ear Headphones

Lets review new Beats Powerbeats2 In-Ear Headphones. Manufacturer tells nothing about their technical details, so this already rises suspicion. Judging by their view, 8 or 10 mm drivers are built into them, tips have additional hooks for better weight distribution and better fixing on ears, cable length is 119 cm and mass is 26.7 g. They are protected from sweat and moisture, volume control unit with microphone and phone remote control buttons is attached to cable. Package contains : Beats Powerbeats2 In-Ear Headphones themselves, carrying and storage case, 4 interchangeable tips of different sizes for comfortable wearing by different people, cable fixing clip and user’s guide. All in all, taking into account lack of technical information ( frequencies range, drivers diameter, magnets, impedance, sensitivity and maximal input power ) and very hight price ( 199 USD at the end of Autumn 2015 – for half of this sum there is ability to buy profession studio monitor headphones and for much smaller money amount there is ability to buy very good in-ear headphones with known technical details ), these headphones are not recommended for purchase.

ESI U24 XL – external audio interface for recording, playback and transmitting of completed signal

External sound card ESI U24 XL
External sound card ESI U24 XL

Lets meet with external sound card ESI U24 XL, which is designed for recording, playback and transmitting of completed signal ( because it has no specialized microphone and instrumental Hi-Z inputs and MIDI connectors ). Its frontal panel has : analogue TRS ( 1/4″ jack ) inputs and outputs for left and right channels with gold-plated contacts and their work indicators, one of outputs can be used for monitor headphones. Its rear panel has : coaxial digital RCA input and output with gold-plated contacts, USB port, through which it is powered and communicates with computer, and optical Toslink digital input and output.

External sound card ESI U24 XL ( rear view )
External sound card ESI U24 XL ( rear view )

Card supports 96 kHz sampling rate and 24 bits precision of digital to analogue and analogue to digital conversions. For it drivers are released for Windows XP, Vista, 7, 8 and newer with support of ASIO 2.0 interface and for Mac OS X 10.4 and newer with support of Core Audio interface, via which it tightly integrates with modern DAWs : Avid Pro Tools, Ableton Live, Steinberg Cubase, FL Studio, Cackewalk Sonar, REAPER and others. Card sizes are 10 x 9 cm, package contains : ESI U24 XL external sound card itself, USB cable, optical disks with drivers and software and user’s guide. It is good sound card for recording, playback and transmitting of already completed audio signal with optimal price; but if card will be used for wider spectrum of tasks, then it is better to buy device with wider amount of connectors and functions.

Tokina AF 100mm F2.8 AT-X M100 AF PRO D – fixed tele-photo lens for Nikon and Canon mounts

Photo-lens Tokina AF 100mm F2.8 AT-X M100 AF PRO D
Photo-lens Tokina AF 100mm F2.8 AT-X M100 AF PRO D

Lets review fixed tele-photo lens Tokina AF 100mm F2.8 AT-X M100 AF PRO D, that is released for full-frame and APS-C mounts of Canon and Nikon cameras. Its focus is equal to 100 mm, aperture can be set in f/2.8 – f/32 range ( it is lens of middle level light strength ) with use of 9 diaphragm blades, field of view is 24 degrees, minimal focusing distance is 0.3 m with macro ability and support of focusing on infinity ( with use of this lens there is ability to make photos of astronomical objects and of distant land objects ). Lens supports automatic and manual focusing and aperture control and does not support optical image stabilization ( which camera can perform by itself via sensor shifting, if it supports it ), there is ability to attach 55 mm optical filters to it. 9 lens elements in 8 groups are built into it ( this is relatively large amount for fixed lens ), they all are covered with protective and anti-reflective multi-coating. Its sizes are 73.66 ( diameter ) x 95 ( length ) mm, mass is 540 g, it is eligible to 2-years manufacturer’s warranty. Package contains : Tokina AF 100mm F2.8 AT-X M100 AF PRO D photo-lens itself, frontal and rear caps, storage and carrying case and user’s guide. In technical characteristics respect, this is a middle tele-photo lens with automatic focusing support, which is useful for photos and videos making ( especially if camera can perform image stabilization ). But, if there is no need in automatic focusing, then there is ability to buy tele-photo lens with similar characteristics at much lower price.

SOL RELAYS SPORT – in-ear headphones for sports exercises

In-ear headphones SOL RELAYS SPORT
In-ear headphones SOL RELAYS SPORT

Lets review audio novelty SOL RELAYS SPORT – in-ear headphones for sports exercises. Manufacturer tells almost nothing about their technical characteristics, this points thoughts in suspicious direction. Judging by their view, 8 or 10 mm drivers are built into them, they are protected from sweat and moisture and has small mass and low-profile. Their volume control unit has built-in buttons for phones control, they are supplied with changeable tips for comfortable wearing by different people and are subject to 1-year manufacturer warranty. Package contains : SOL RELAYS SPORT headphones themselves, storage pouch and user’s guide. Overall, with lack of technical details from manufacturer and high price ( 50 USD at the end of Autumn 2015 ) it seems, that these headphones are simply marketing money pumping from customers, so, if there are no special sympathy to their design, then it is better to look on devices of other manufacturers with known technical details and more acceptable price.

Roland QUAD-CAPTURE – advanced audio interface with full spectrum of connectors and functions

External sound card Roland QUAD-CAPTURE
External sound card Roland QUAD-CAPTURE

Lets meet with external audio interface Roland QUAD-CAPTURE, which has full spectrum of connectors and functions for use in small studio. It can process and transmit sound with sampling rates up to 192 kHz with 24 bits precision, internal processing is performed with 40 bits per sample precision; digital signal through specialized connectors is accepted and transmitted with sampling rates up to 96 kHz. Its frontal panel has : instrumental Hi-Z and microphone combined balanced XLR/TRS ( 6.3 mm jack ) inputs ( phantom power +48 V can be connected to microphone input, instrumental input can be switched into linear mode ); amplification control knobs for these inputs with automatic control switch and clip indicator; TRS ( 6.3 mm jack ) output for monitor headphones with Direct Monitor switch, playback volume control, card work mode switch and USB connection indicator. Its back panel has : USB port, through which it powers and communicates with computer; MIDI input and output; coaxial digital RCA input and output; main balanced TRS ( 6.3 mm jack ) outputs; and following switches Ground Lift, phantom power and Hi-Z/linear mode of instrumental input.

External sound card Roland QUAD-CAPTURE ( rear view )
External sound card Roland QUAD-CAPTURE ( rear view )

Card’s noise level is -95 dB, dynamical range of analogue to digital conversion is 104 dB and of digital to analogue : 109 dB. For analogue inputs it uses quality VS Preamps, its power unit has low noise level, body is made of aluminum and it supports Direct-Box ( DI ) function for electro-magnetic interference protection on live concerts. Card supports Roland VS Streaming technology and ASIO 2.0 and WDM ( in Windows XP, Vista, 7, 8 and newer ) and Core Audio ( in Mac OS X ) interfaces for tight integration with modern DAWs : Cackewalk Sonar, REAPER, Avid Pro Tools, Ableton Live, Steinberg Cubase, FL Studio and others. Its sizes are 185 ( width ) x 134 ( depth ) x 44 ( height ) mm, and mass is 570 g. Package contains : Roland QUAD-CAPTURE external sound card itself, USB cable, optical disk with drivers and software and user’s guide. Roland CAPTURE sound cards in functionality and set hardware are superior to cards of Behringer and other manufacturers, and are on approximately the same level as Steinberg cards and, in reality, together with Steinberg cards has no competitors among these devices at these days. So, if there is need to buy external sound card, then cards of these manufacturers are first candidates for this task.

MEE audio M7P Secure-Fit Sports – new sportive in-ear headphones

Compact in-ear headphones MEE audio M7P Secure-Fit Sports
Compact in-ear headphones MEE audio M7P Secure-Fit Sports

Lets review new compact sportive headphones MEE audio M7P Secure-Fit Sports, designed for in-ear use. Their drivers size is 8 mm, they can reproduce sounds in 20 – 20000 Hz frequency range, impedance on 1 kHz equals to 16 Ohms, sensitivity is 98 dB and maximal power input is 5 mW. They are supplied with 1.3 detachable cable with 3.5 mm mini-jack connector. To its volume control unit microphone ( with 100 – 5000 Hz perceived frequencies range and -40 dB sensitivity ) and phone remote control are attached. Cable additionally has over-ear parts to distribute its weight evenly; pads, cable and its volume control module are protected from sweat and moisture. Headphones are released in 4 color variants : gray, red, blue and green. Package contains : MEE audio M7P Secure-Fit Sports headphones themselves, detachable cable, pouch of according color, 4 pairs of silicon ear-tips of different sizes, clothes clip and user’s guide. Characteristics of these headphones are mainly similar to those ones of other devices of such type, so, this model should be preferred for purchase only in case of sympathy to their design, reliability and convenience of their construction and adequate price.