Horizon Bone Conduction Wireless Sports Bluetooth Stereo Headphones (Black) BONE CONDUCTION TECHNOLOGY transmits sound waves directly to the cochlea by vibrations, frees ears and protects hearing. WIRELESS stereo headphones. Connect them to your mobile phone via Bluetooth for calls or music LONG BATTERY LIFE. Up to 8 hours in playing mode and up to 15 days in standby mode! LIGHTWEIGHT and SUPER FLEXIBLE. The flexibility of the frame will allow people with different head shapes comfortably wear these headphones without the fear of dropping them even doing physical exercises. WATERPROOF IPX6 grade. These headphones are not afraid of rain or even a quick shower!