IPX7 Waterproof: Upgraded Waterproof Rating, 100% prevents ordinary splashing water and rain (Note: This headset is not suitable for swimming use). One Step And Auto Pair: Equipped with the latest bluetooth 5.3 technology, easy to connect to your electronic device such as IOS/Android/Windows equipment, and 1 SECOND auto pair to your device next time. 16 Hours Playtime: The headphones applied to the latest CSR chipset technology, lower power consumption but features faster & more stable signal transmission. Powerful Bass Stereo Sound: Upgraded headphones bluetooth with 11mm dynamic drivers with CVC 8.0 sound isolation tech provied you a fantastic sound quality with powerful bass sound and supper crystal clear calls. Sport Headphones: Comfort and secure fit with light weight and ergonomic design,supper stablity with earhook, in-ear fitting tips and headband, great for Running, Jogging, Hiking, Biking, Gym, Working out outdoor or home.