SPECIFICATION Use: Portable Media Player, Mobile Phone, Aviation, Computer, DJ, Gaming, Sports, Audiophile, travel, PROFESSIONAL Function: Bluetooth, Waterproof, Noise Cancelling, Microphone Style: In-Ear Communication: Wireless Bluetooth Standard: Bluetooth v5.0 Waterproof Standard: IPX-5 Active Noise-Cancellation: Yes FEATURES Binaural simultaneous connection Single ear independent connection. Each headset can be used as a separate bluetooth headset, and two headphones can be use in rotation for a longer time. IP6 class waterproof without fear of wind and rain. Whether it's sweating in the gym or running in outdoor rainy days. It can charge earphones about 35 times and charge your mobile phone at the same time. A charging box is in your hand, so you can travel outdoor's without worrying. Small and delicate stereophonic sound that can be placed in the palm of the hand. 5D binaural stereophonic sound. Convenient charging bin nearly 2200 Ma's charge box. No need to press hard, buttongdirectly, open the hatch easily, smaller, lighter and more compact, bag pocket are free to move at anytime.