Description:Lenovo QT82 True Wireless Stereo Earphones BT 5.0 Wireless Headphones IPX5 Waterproof Sweatproof Touch Control Stereo HD Binaural Calls With MIC 400mAh Charging Box Deep Bass Sports Headset Compatible with BT Devices For All SmartphoneFeatures:Touch control: Volume up/down, receive/decline/hang up phone call, play/pause music, previous/next song, etc.The wireless headphones are compatible with almost all of phones, tablets and laptop with Bluetooth function.The latest BT5.0 chip delivers fast and stable transmission and incredibly low audio latency.When opening the charging case, the BT headphones automatically matching.HiFi sound quality allows you to enjoy stereo music.Parameters:Item name: Lenovo QT82 BT5.0 EarphoneModel: QT82Color: Black/WhiteBT version: 5.0Material: ABS+PCCharging time: About 1hMusic time: About 6~8hEarphone battery capacity: 40mAh 3.7VCharger box battery: 400mAh 3.7VWireless distance: 10m(Open area)Package Size: 50*25*40mmPackage Weight: 70gNote:The battery usage may be slightly different due to the actual usage.There is a little of difference according to manual measurement.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.*Please do not immerse the earphones in water to prevent damage, thank you.Package List:1*A pair earphones1*Charging box1*USB cable1*User manual