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: iPhone series, iPad series, Samsung series, android and any Bluetooth enabled device. Your Best Choice!