Company ASUS presented new 9.2 mm in-ears headphones EL33 with microphone, support of 20 Hz – 20 kHz sounds frequencies playback and 103 dB sensitivity for 15 USD. Their impedance is 16 Ohms, cable is mounted to both cups and is connected to sound source via 1/8″ mini jack connector; in its volume control module uni-directional microphone and smartphones control button are built-in. Package contains : ASUS EL33 headphones themselves, interchangeable earstips of different sizes ( small, medium and large ), warranty card and user’s guide. From one side : headphones are good enough and have not very big price; from the other : in-ears headphones will not give high-quality sound due to small membranes and for 2 – 3 times smaller sum there is ability to buy similar devices, which are not weaker, than these ones. So, there is ability to look on other in-ears headphones, if compactness is needed the most, or add small sum and buy 40 or 50 mm monitor headphones, if sound quality is the most important.