Meet the HD 450SE Wireless Headphone Step up to great wireless sound with the new HD 450SE with Alexa from Sennheiser. Thanks to a combination of active noise cancellation, advanced Bluetooth technology and 30-hour battery life, this versatile wireless headset is your companion for enjoying better audio. And with Alexa, access to music, podcasts or audiobooks is easy. Whether listening to a podcast or on the go with your favourite song, the new HD 450SE delivers superior sound quality – whatever you listen to. Active Noise Cancellation Thanks to Sennheiser's active noise cancellation and a closed-back design, the HD 450SE delivers captivating sound that can be enjoyed without distraction – even in a loud environment. Superior Sound Created to deliver a superior sound experience with deep dynamic bass. Exceptional quality is assured by high-quality wireless codec support, including AAC and AptX, with AptX Low Latency to keep audio perfectly in sync with on-screen action when watching videos. Perfect Travel Companion A great companion for travel, the HD 450SE has a superb 30-hour battery life with fast USB-C charging, a Voice Assistant button for Alexa, Siri and Google Assistant interaction, and a robust folding design for take-anywhere durability. Personalize Your Sound The free Sennheiser Smart Control App (available on Apple & Android devices), with selectable sound modes, allows you to tailor the sound experience to your travel playlist. Besides battery status and firmware updates, the app features a podcast mode that optimizes podcasts' intelligibility, audiobooks, and other speech content.