Sennheiser HD 450BT Headphones Step up to great wireless sound with the new HD 450BT. Delivering active noise cancellation, high-quality wireless codec support (AAC, aptX Low Latency), and Bluetooth 5.0, this headset gives you superior sound with deep dynamic bass. Exceptional versatility for audio lovers is guaranteed by Voice Assistant access, the Sennheiser Smart Control App and a 30-hour battery life Accessory List: Whats in the box: HD450BT Wireless headphones, Audio Cable, USB-C Charge Cable, Carry Case, Quick Gu Depth: 90 MM Height: 190 MM Width: 160 MM Battery Life (in hrs): 30 Bluetooth: Y Dongle Required: N Noise Cancellation: Y Wifi Enabled: N Over-ear headphones for immersive listening, with compact and folding design Active noise cancellation - enjoy captivating sound that you can enjoy without distraction – even in loud environments Sennheiser Smart Control App - tailor the sound to your personal taste effortlessly High-quality wireless codec support (AAC, aptX™ Low Latency), and Bluetooth® 5.0 for superior audio sound Quick charge USB-C, to save valuable time on the move Detachable cable and carry case included Take intuitive control of your music and calls via easy touch buttons on the earcups Sennheiser Signature Sounds Quality