BT 5.1 technology ensures higher data transfer speed, more stable and fast connection, and lower power consumption. True wireless dual-ear design, left and right earphone channels are separated. It can be used solely or in pairs. Touch control design, no more pressure on your ears. Easy to control music and calls, and activate voice assistant. Built-in Mic on both earbuds with intelligent noise reduction delivers clearer talking sound in stereo mode. A 300mAh charging case can charge and store the earbuds. 30mAh battery in each earbud ensures about 3.5 hours of music time.