Bone Conduction Technology - Guiding the sound vibration through cheekbone into the auditory centre, which will eliminate many steps of acoustic transmission. Allowing ears to be open to surrounding sound, suitable for runners and bikers, great stability while exercising. Light weight for you long-time wearing without any uncomforts and burden, and it is convenient and easy for you carrying it outsides for fun. With Bluetooth 5.0 + EDR chip,it ensures high-fidelity stereo sound quality and stable performance.Super easy and fast paring with your smartphone or other Bluetooth device for high-fidelity stereo music, movies and chatting.