Description: With bone conduction technology, ear hook style, clear sound quality and high-fidelity stereo. 180-degree rotation fits both left and right ear. You don't have to put the earphone into your ears, protect your hearing. Bluetooth 5.0: Wireless paring with your device about 15 meters, featured with microphone, support music and various connection. Strictly fitted waterproof and sweat-proof, suit for left and right ear. Intelligent compatibility: Support all mobile phones or tablet notebook device which is with Bluetooth-compatible function. You can connect two Bluetooth-compatible devices at the same time, switch to listen to songs, games, and calls at any time. Features: Battery display, NFC function, voice-control function. Build in 170mAh lithium battery. Bluetooth playback time around 12 hours, fit for outdoor or indoor activities, such as running, hiking, bicycling, etc. Specification: Material: Plastic Size: Length x width x height 6.7x5.2x1cm/2.64x2.05x0.39inches Weight: Approx. 56g Bluetooth: 5.0 Battery capacity: 170mAh Connection distance: 15m Package Includes: 1 Piece Headphone 1 Piece USB Cable 1 Piece Manual Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thanks.