Premium, wireless over-ear ANC headphones with Bang & Olufsen Signature Sound, luxurious materials and a dedicated button for voice assistant controls. An intuitive aluminium touch interface gives you control over your music and calls while 25 hours of battery allows for extended wireless play time. A refined design and advanced features include Transparency Mode so you can tune in to your surroundings while youre out and about. Authentic and luxurious materials like anodized aluminium, lambskin and cowhide give natural strength and long term comfort. Move freely and explore the sound or simple enjoy the silence. Features Rechargeable battery Offers up to 25 hours with Bluetooth and active noise cancellation, up to 32 hours with only Bluetooth, up to 33 hours with only active noise cancellation. Active noise cancellation Actively cancels waveforms from outside the earcup to completely eliminate extraneous sounds. Built in Microphone Enables simple hands-free chatting via a compatible device. Built in Google Assistant Activate your Google Assistant with just a press of a button. Touch controls Include volume, answer/end call, play/pause, next/previous track and noise-cancellation .