Bluetooth 5.1 and Auto Pairing: Our wireless earphones uses the latest Bluetooth 5.1 chipset. Bluetooth 5.1 can not only achieve low latency, but also can achieve a connection distance of about 15 meters, within this range, the headset will not be disconnected. All you need to do is to put on the earphones to achieve extremely fast pairing and enjoy the convenience brought by 5.1 bluetooth technology and fast pairing.cVc 8.0 Ruduction and Deep Bass Stereo: Donerton bluetooth headphones deliver powerful, balanced deep bass stereo sound with dynamic range for incredible listening experience, and this wireless earbuds provides you the professional cVc 8.0 noise reduction, you can only hear the music you like and it will provide you far away from the noise, which allows you to enjoy more professional music during exercise.IP7 Waterproof and Earhook Design: Different from ordinary in ear earbuds, the earhook of Donerton wireless sports headphones are made of highly plastic materials, providing soft, thin and comfortable wearing effect, designed to allow you to exercise, the earplugs can be firmly fixed on your ears while giving you a more comfortable wearing experience. Thanks to the IP7 waterproof, you dont have to fear the erosion of your earphones by sweat during exercise.Type-C Quick Charge and 42H Playtime: Donerton workout headphones is equipped with Type-C charging port, which provides fast charging and can play for one hour after charging for ten minutes. The longest playtime of the earplugs is 5 hours. With its own charging box, it can achieve 42 hours of playtime. The combination of fast charging and 500 mAh large capacity charging box, it can last at least a week without charging.