About this item ENC & High-quality sound: Environmental Noise Cancellation technology monitors and reduces ambient noise, allowing you to experience incredible high-quality stereo sound even in noisy surroundings. Enjoy audio in HD, including high-quality calls and video chats anytime, anywhere. Hi-Fi sound quality, deep bass, and 3D surround stereo bring every detail of the music to life. Smart Touch & Waterproof: Simple and convenient control system. Tap once to play/pause music and answer calls, double tap to skip forward/backward, long press to adjust the volume, and long press for 2 seconds to refuse a call. Nanotechnology prevents earbuds from being damaged by sweat and rain, making them suitable for sports. Enjoy wonderful music while exercising or showering. Bluetooth 5: Utilizing advanced Bluetooth 5.3 technology for a low-latency listening experience and high-quality calls. One-step pairing means that when you use the earbuds again, simply open the charging case, and they wil