Leaf Bass 2 Wireless Bluetooth Headphones comes with a Hi-fi Mic and an incredible 15 Hours of battery life(music/talktime) for a nonstop music experience. In built with bluetooth v4.2 and 40mm drivers, it is designed to deliver a crisp sound with deep bass. A speaker resistance of 32 Ohm & sensitivity range of 109 (+/- 2)dB minimizes any distortion of sound quality. So just sit back and #FEELTHEMUSIC.