*ONLINE ONLY - Allow extra time for delivery. Ship to store FREE! During checkout select ''Store Pick-up'' as your delivery option.* Sennheiser HD 450BT Wireless Headphones. Stereo - Mini-phone (3.5mm) - Wired/Wireless - Bluetooth - 18 Hz - 22 kHz - Over-the-head - Binaural - Circumaural - MEMS Technology Microphone - Noise Canceling - Black. 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.