Tangxi Open-Ear Wireless Sports Headsets Bone Conduction Headphones Bluetooth 5-0 Waterproof Earphones with Mic for Jogging Running Driving Cycling Sweatproof and Lightweight

Specification: Package Size: about 16.8*10.8*5cm/6.61*4.25*1.97inch Bluetooth chip: QCC3003 Speaker type: 1 watt bone conduction speaker Battery: 170 mAh polymer battery Microphone: anti-interference microphone, -40db Work time: 5 hours(standard volume) Standby time: 20 days Effective range: 15m Mono/stereo: stereo Bluetooth version: EDR / (QCC3003) 5.0 Bluetooth Class (1/II): II BQB included(Y/N): No Bluetooth Profile: a2dp/HFP, HSP, AVRCP, GAVDP, AVDTP Receive sensitivity: 84±3dB Impedance: 10 ? ± 15% (AT 800 HZ) Frequency range: Fo-20KHZ FM: No Charging: 2 hours using USB interface TF card: No System Language : English Tips Package List: 1 * Headphone 1 * Instruction Manual 1 * USB Cable