Use: Portable Media Player, Mobile Phone, Aviation, Computer, DJ, Gaming, Sports, Audiophile, travel, Professional, Hearing Aid Function: Bluetooth, Waterproof, Noise Cancelling, Microphone Style: In-Ear Communication: Wireless Vocalism Principle: Dynamic Volume Control: Yes Cord Length: None Bluetooth Standard: Bluetooth v5.0 Waterproof Standard: IPX-7 Active Noise-Cancellation: Yes Feature: These earphones are multifunctional: Automatic startup/shutdown, pairing, and restart; shutdown when charging; and binaural stereo call. Wireless earbuds in line with ergonomic shape design could perfectly fit with the ear to maintain comfortable wear for a long time. It has a unique design of medical silicone in the ear. Light-weight and IPX7 waterproof, when you are working or doing sports, there is no need to worry about falling off. The earphone could provide a strong bass stereo sound, which has a higher definition and is more dynamic. Touch control design makes it more convenient to use. Just press the button to play/pause music or answer/hang up the call. The left and right earphones could be used separately, so they could connect two mobile phones simultaneously. With a built-in controller and microphone, they are designed for those who like classic music, rock music, and popular music. 1 year warranty.