Features: [Ear-free Keeping Danger Away] 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 young and the old to avoid ear damage, also suitable for people who has trouble in listening. [Keeping Ear Disease Away] No need to put into ear, easy to clean, avoid ear disease caused by sweat in ears when excercising. It can effectively ensure the health of the ear canal. [Perfect Sound Quality] Wired bone conduction headset offers high-fidelity stereo music. Built-in high-performance noise reduction Microphone provides a clear communication effect even in a noisy environment. [Strong Compatability] Compatible with almost all 3.5mm audio devices such as, Smart phone, tablet PC, Notebook, etc. Suitable for walking, hiking, running, climbing, skating, driving and more. Offers Much More Convenience: * Built-in rechargeable 300mAh Lithium battery lasts more than 10 hours of Playing Time and 60 days of Standby Time per charge cycle. * Supports hands-free calls, greatly set free you hands from answering the call during exercise. * Creative ergonomics design, balanced wear, tight on the ear.