Crystal Clear Calls: 4 enhanced microphones provide noise-canceling call technology to effectively offer you crystal clear call. IPX7 Sweatproof & Waterproof: Built-in Innovative SweatShield Technology will keep every single drop of sweat on the outside where it belongs. Robust 35 Hours of Playtime: EarFun Air wireless earbuds can provide 35 hours of playtime when fully charged (case included). Single Earbud Option: Either earbud can be automatically paired to your device for independent use. Bluetooth 5.0 and Auto Connect: EarFun Air Bluetooth headphone powers on automatically and pairs to your Bluetooth-compatible device when opening the carrying case lid. Game Mode: <100ms low latency brings you better gaming and video experience, making the game and video sound more smooth, let the sound transmit from the game and video to your ears in real-time.