Features: No need to put into ears, easy to clean, avoid ear disease caused by sweat in ears when excercising. It can effectively ensure the health of the ear canal. The sound transmits through the bone to auditory nerve, no eardrum damage, healthy, scientific and comfortable, good for child, the youth and the aged to avoid ear damage, also suitable for people who has hearing impairment. Release your ears to listen the world, you can response to the surrounding situation quickly, far away from dangerous, suitable for many outdoor activities. BT 5.0 ensures high data transfer speed, stable connection, and low power consumption. Free to enjoy hands-free calls or BT music via BT connection. 180mAh rechargeable Lithium battery provides up to 10 hours of playback time on one full charge and the standby time can last to 10 days. Specifications: Color: Black BT: V5.0 Speaker: 16mm Transmission distance: >10m Headset capacity: 180mah Talk time: 8 hours Playback time: 10 hours Charging time: 3H Weight: 67g Package List: 1 * Bone Conduction Headphone