COWON EM1's provide a new level of listening quality and comfort. Featuring a high performance microphone and remote control to take phone calls， pause and play music. Fully compatible with smartphones including the iPhone， Galaxy SIII & Galaxy Note II<br>The Cowon EM1 earphone boasts of fantastic sound quality and amazing fit. The dynamic canal type driver unit measures 10 mm and ensures that you get clear and crisp audio. Ergonomically designed， the earphone has a snug and comfortable in-the-ear fit. Available in black， it boasts of a stylish yet elegant earpiece design.<br>The impendence of EM1 earphone measures 16 ohm while the sensitivity is 103 dB at 1 mW. The earphone has been crafted to provide an ideal balance between mid， low and high tones so that you can enjoy your favourite genre， whether it is rock， hip-hop or classical. EM1 earphone has a rated power value of 3mW and a max power value of 20 mW.