Features: Wireless BT 4.1 Quick Pairing. Headset with BT v4.1 version, compatible with most BT enabled devices, simple, quick and safe pairing. Can connect two phones simultaneously. Ergonomical Design Comfortable To Wear. Sporty idea injected, light in weight, rubber coating, comfortable to wear for a long time. Noise-Cancelling Crystal High Quality Sound. In-ear headset, clear crystal hd sound, take phone calls with built-in microphone, convenient volume control. Hands-Free Mutifuctional Keys. Easy multi-function button, convenient keys, pair/off/on receive/hang music play/pause volume +/-. User-friendly Safe Driving. Stable for business/sport activity, watching movies. Sweatproof, nice for running, jogging and gym exercise. The HM1000 is a perfect headset to help you keep your hands free whether you are working in the office or driving in your car. Long Time Standby Endurance. 55mAh Rechargeable Li-ion battery, long time standby.