Left and right ear dual battery, low power consumption, long battery life. Charging for 2 hours, listening to songs for 15 hoursThere are wire clips specially designed for sports, which can adjust the length of the wire at will, reduce the friction collision between the wire and the clothes, and improve the wearing stability.IPX4 waterproof and sweat-proof. Easy magnet suction, easy to carry.6mm shock sound unit, dynamic sound quality, extra points for sports. Use the companion app, free radio, listen casually.Easy wire-controlled call, bluetooth free hands, fitness does not hinder the call, binaural stereo.bluetooth 4.2 is more stable and more powerful. Support for linking two bluetooth devices, PAD entertainment / mobile phone call freely switch between the two.