【Active Noise Cancelling Up to 23dB】 This ANC headphone can actively detect the environmental noises via the active noise cancelling system built inside the headphone. It is designed with the Feed Forward ANC technology. The noise reduction level is from 21 dB to 25dB. So, when we are in a flight, train, metro, or walking on the public street or mall, this ANC headphone can well cancel the noises and create a quite world for you.

【40mm neodymium powerful bass drivers】 The speakers for this headphone is customized based on the ANC supported acoustic housing structure. It reproduce super powerful bass with crystal clear sound. If we switch on the ANC function, the listening or communication experience will be amazing.

【 All Designed Based on Button Control 】One button for switch on or off the ANC function. And, the ANC function can work alone or together with the bluetooth function. If we ant to activate both functions, please activate the anc and the bluetooth via the two function buttons. We can easily learn the functions of each button and find the correct button by the pad printing text besides the button or the engraved marks on the top of the button.

【Keep Working 16 Hours Without Stop】There is a 400mAh rechargeable lithium battery inside the headphone. Normally, it can works 16 hours without stop. If switch on the ANC function, it can works 16 hours without stop.

【Designed a 3.5mm Aux In Socket】this wireless headphone can be used as a wired headphone. It is designed with a standard universal 3.5mm audio socket. And, there is a extra 3.5mm to 3.5mm audio cable as its accessories. So, this wireless bluetooth headphone can works as a normal universal wired over head music headphone.

【 Extensible Headband slides For better fitness】For fitting the sizes of different users, the headband is adjustable. We can easily adjust the sizes of the overall headband via the sliding structure design of this headphone.