About this item Bone Conduction Technology: Bone conduction headphones deliver sound through your cheekbone, without passing through the external ear canal, great to protect your hearing from long-term audio life. Perfect for people who like listening without the hearing damage. (If listening to music in a noisy environment, please insert sponge plugs in your ears to get more loud and clear sounds) Be Aware of Surroundings : To avoid dangerous happening when you're running on the road, Also keep in connection with your family and hear the need of your child while you are doing chores Comfortable Wearing: Open-ear design allows you needn't put the headphones into your ears, Lightweight body and flexible titanium headband reduces pressure on the ears, and soft silicone patch is more soft for cheekbone skin Large Capicity Battery: 2 hours full charge support 13 hours music continuous play or 720 hours (30 days) standby Bone conduction headphones are suitable for people who love outdoors activities, such as running, hiking, bicycling, etc; also suitable for people who usually wear headphones for a long time but need to prevent hearing loss. Besides, bone conduction headphones are helpful and useful for people who have mild hearing loss but can hear the sound of your teeth and teeth colliding