Language Switch:Keep the headset in the boot state, Red and blue lights flashing,not the bluetooth pairing, Long press multifunction button and (vol+) button at the same time can switch to English. Comfortable to Wear: Ergonomically-shaped in-ear plugs and lightweight brings comfortable and relaxed feeling even after long-time wearing. Noise Cancelling Technology: Intelligent CVC6.0 intelligent noise reduction technology can eliminate the noise and echo when talking Multifuction: Pairing is just easy and quick with a simple switch button, and it have capable of connecting to 2 phones at the same time, enjoy the streaming music and GPS directions in a 10-meter working. Support voice prompts. HD 1080P shock sound Compatible with: For iPhone series, iPad series, Samsung series, android and any Bluetooth enabled device. Your Best Choice! Caller ID Report: Announce Coming Caller's Phone Number, Pause Music for InComing Calls. Voice Recognition: Manage Calls Handsfree Without Pressing Buttons Through Voice Recognition Technology,Just Say "Yes" to Answer or Say "No" to Refuse call. Sweatproof Technology: Protects This Bluetooth Headset from Sweat, and Coffee Spills so You Can Wear the Headset in the Office or at the Gym. - 180°adjustable Ear-fit design allows you to adjust the angle to fit on your right or left ear. You could also move the boom mic up and down,this make it very easy for people to tell if you are on a phone call or not. Enhance battery capacity ensure the longest using time(when full charged),it displays the battery meter on your smartphone,remind you to fast charge for next time: Standby time:11 days Talking time:8 Hourss Music Playing Time:6-8 Hours Charging Time:Less than 2 Hours colour:black Material:ABS Package Contents: 1 x Bluetooth headset 1 x USB charging cable1 x User guide Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.