Features: [Strong Compatability] Adopts advanced BT 4.1 technology, compatible with almost BT-enabled devices such as smartphones, tablet PCs, notebooks; with sweat-proof function, suitable for walking, hiking, running, climbing, skating, driving and more outdoor activities. [Perfect Sound Quality] Wireless bone conduction headset offers high-fidelity stereo music. Built-in high-performance noise reduction microphone and foam earplugs provide a clear communication effect even in a noisy environment. [Wireless Earphones Free Your Ears] Release your ears to listen the world, you can response to the surrounding situation quickly, far away from dangerous, suitable for many outdoor activities. [More Comfortable and Healthier] 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. [Keep Ear Disease Away] 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. More Advantages: * Built-in rechargeable 160mAh Lithium battery lasts more than 6 hours of Playing Time and 10 days of Standby Time per charge cycle. * Creative ergonomics design, balanced wear, tight on the ear.