ACTIVE NOISE CANCELLING- Mature noise reduction technology with B2 eliminates up to 85% airplane cabin noise, city traffic or a busy office noise, creates your Quiet and comfortable personal working space

Latest Bluetooth technology:B2 noise cancelling Bluetooth headphones with Bluetooth 5.0 are designed for quick and stable connection and hands-free calls, makes seamless Audio/video syncs comes true; easily switches between two Bluetooth devices at a time,Powerful Bluetooth Function

30H playing time at Bluetooth+ANC mode : Enjoy up to 30 hours of non-stop playtime in Bluetooth +ANC mode,B2 noise cancelling headphones with full charge only need 3 hours. While you can enjoy over 80Hours with ANC+wired mode,40Hours with Bluetooth without ANC mode.No need to worry about the power shortage problem anytime on your long travel.

Hi-fi sound: Dual 40mm large-aperture drivers deliver riveting sound and a thumping bass.The clean and crisp sound resolution will give you a lively music experience wherever you are. Built-in CVC 6.0 microphone crisp, clear calls without any ambient noise. It is the best call experience in the world.

Unrivaled comfort and PORTABLE CONVENIENCE: B2 active cancelling headphone with adjustable headband, big soft ear pads can be worn over long time without Overheated and uncomfortable feeling. travel case provide a highly portable listening solution. GOOD TRAVEL HEADSET CHOICE.