Latest Bluetooth 5.3 technology, easy and fast pairing with smartphones, tablets and other Bluetooth-enabled music devices Support Active Noise Canceling(ANC) function, isolate the noise from the outside world and enjoy more pure music The built-in rechargeable lithium battery has long endurance, no power anxiety Ergonomic design, comfortable to wear, foldable and lightweight, convenient for carrying and storage Wireless Bluetooth sports music headphones, can reduce the radiation of mobile phones, release the hands to answer the phone It can make the brain away from the phone radiation, no longer need to hold the phone to call, the waist is not sore, and also reduce the risk of the phone falling Support both wireless and wired modes. Used as a wired headphone with an audio cable plugged into your headphones. Change from wireless headphones to wired headphones in seconds Suitable for running, bicycling, sports, etc. Specifications: Bluetooth vision: V5.3 Bluetooth distance: 10m Material: Plastic+Leather ANC frequency range: 20-1000HZ Charging port: Type-C Battery capacity: 500mAh Working time (Bluetooth only): 37 hours Charging time: 2.5 hours Working time(Bluetooth and ANC): 32 hours ANC Noise Value: -20±3db Driver: 20-50mW Resistance: 32Ω Voice support: Support Frequency response: 2.402GHz-2.480GHz W.G: 0.405kg