Adopt the latest in Bluetooth 3.0 technology with rock-solid transmission and widespread compatibility with all other Bluetooth devices. Unplug with up to 10 meters of connection range, and enjoy wireless music and phone calls. Rechargeable lithium battery: with 5-6 hours of call duration, this headset frees up your hands when you’re on the go – from biking to driving, you’ll be able to stay connected. .Supports HD communications and music/video playback. Track switching and volume adjustments can be made right from the headphones. Folding structure design, Convenient to carry Scalable design, can suit difference head shape. With built-in FM radio functionSupport Micro SD card to listen music, quick and easy Soft ear cover making wear comfortableHands-free calls making free communication Warning: Prolonged exposure to loud music or other sounds through headphones can damage your hearing. Please always adjust your headphones to a suitable volume. Also, do not use while driving, as headsets can distract you from the road and cause accidents.