Features: BT 5.0 version has no delay, low Power-consumption and stable signal. Stereo surround sound quality, brings you stunning music world. Left and right channel separation, the earphones can be used separately. Intelligent noise reduction, let you have a clear conversation in calling. Automatically connected once the earphone is taken out from Charging-box without any operation. Touching operation, easily turn on/off, play/pause/switch music, answer/hang up calls, ect. Fits for human engineering and releases pressure that caused by pressing to earphone, making your ear comfortable. High capacity Charging-box has long endurance time. Perfect compatibility, compatible with all device as long as the device has BT function. Fashion and simple appearance. Perfect as a gift to your friends, family and so on.