Bone Conduction Headphones Open Ear Bluetooth 5.0 Wireless Stereo Earphones M-D8 - Blue Features: Delivers music through your cheekbones, ensuring ears remain completely open to ambient sounds for maximum situational awareness Bluetooth 5.0 Feature: Continuous connection, non-stuffing, low power consumption, wide compatibility It can realize fast pairing and stable transmission and has ultra-low latency The ergonomic and lightweight design will make your ears completely comfortable It can well solve the environmental noise during the call and provide a better call experience Specifications: Bluetooth chip: BK3266 stereo Bluetooth version: version 5.0 Bluetooth distance: about 10 meters Battery: 150MAH Charging time: about 2 hours Talking and listening time: about 8 hours Frequency: 20Hz-20KHz Impedance: 32 ohms Sensitivity: 85dB/mW Waterproof rating: IPX 5 Package Included: 1 x Earphone 1 x Charging Cable 1 x User Manual