Bluetooth 5.3 chip brings more cutting- longer transmission, more stable, lower power consumption High-quality control, multi-process design of the head body, sports wear effective components to prevent sweat damage Large capacity carp battery, to meet your needs of the day, lower power consumption, endurance is very strong Low latency, high performance, sensitive recognition Pick up the headset instant pairing, put in the power off storage, easy operation Bluetooth receiving distance: 10 meters Standby time: about 300h Single ear capacity: 80mAh Horn specification: 16mm composite film Bluetooth version: V5.3 Noise reduction version: CVC8.0 Music talk time: about 8-10H(with the charging bay) Charging capacity: 300mAh Standby time: about 300h(with the charging bay) General functions: music play/pause, call prompt, binaural call, intelligent noise reduction Material: plastic colour: Black Package Contents: 2 x headphones 1 x charging box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.