Features IPX4 level. Anti-sweat design. never mind when do exercise. Light weight, no pressure on your ears while you do exercise. Fashion and special design, make it different. Fever sound, adopt 8mm unit.  Support multi-points connection. You can connect to two devices at the same time.

Specifications Charging time: 1-2 hours Music time: Up to 6 hours Standby time: Up to 7 days Talk time: Up to 6 hours