Bone Conduction Headphones Bluetooth Open Ear Wireless HiFi Stereo Headset For Sports Cycling Running Driving Gym 100% brand new and high quality Features: 1. Using bone conduction, this earphone can transmit sound through vibration in human bone to put an end to painful earplugs. 2. Adopting BT5.0 technology to ensure strong compatibility, stable connection and stable signal transmission. 3. The premium speaker provides 6D surround sound effect and HiFi output for an immersive sound experience. 4. Built-in 120mAh lithium battery takes 1.5 hours to charge and provides 5 hours of music/talk time after fully charged. 5. Ergonomically designed, adjust the earcup and keep your ear evenly confined to ensure a comfortable wearing experience. 6. Compatible with most Bluetooth devices on the market, easy to pair with phone or tablet. 7. Titanium alloy wire frame, soft, flexible but strong, will not break. 8. IPX5 waterproof and sweatproof, perfect for casual, fishing, running, cycling, fitness, hiking, climbing and so on. Package Included: 1pc Bone Conduction Headphone Note: 1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed in the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)