Features EarFun's latest QuietSmart 2.0 hybrid active noise cancelling (ANC) technology, which can dynamically block out unwanted external noise up to 40dB. Whether working out, study, or traveling, EarFun Air Pro 2 helps you get your quiets back. Even on windy days, you’ll stay immersed wireless audio experience. With QuietSmart2.0 customize anti-wind noise algorithm, EarFun Air Pro 2 will detect when its wind noise around and automatically suppresses it. Feature:- Transparent mode allows ambient sound for safety. Built-in 6 professional mic for stunning call experience. 34-hour Playtime. IPX5 Sweat & Water Resistant. In-ear detection technology.