M-D8 Bone Conduction Headphones Open Ear Bluetooth-compatible 5.2 Wireless Stereo Earphones IPX5 Waterproof Headset for Sport Fitness _x005f_x000D_ Specification: _x005f_x000D_ Bluetooth-compatible chip: BK3266 stereo _x005f_x000D_ Bluetooth-compatible version: 5.2 _x005f_x000D_ Bluetooth-compatible distance: about 10 meters _x005f_x000D_ Battery: 150mAh _x005f_x000D_ Charging time: about 2 hours _x005f_x000D_ Talk music time: about 8 hours _x005f_x000D_ Frequency: 20Hz-20kHz _x005f_x000D_ Impedance: 32 ohms _x005f_x000D_ Sensitivity: 85dB/mW _x005f_x000D_ Waterproof rating: IPX5 _x005f_x000D_ Color: Blue, Green, Red, Black _x005f_x000D_ Product size: 129*112*70mm _x005f_x000D_ Product weight: 25g _x005f_x000D_ Packing size: 158*108*45mm _x005f_x000D_ Package weight: 71g _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ There may be slight size deviations due to manual measurement, different measuring methods and tools. _x005f_x000D_ The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 Pair X Bone Conduction Headphones _x005f_x000D_ 1 X Charging Cable _x005f_x000D_ 1 X Manual