PRODUCT GRADING (Grade A) - Excellent Condition with Minor if any signs of use and wear > Refurbished to the highest standards. Original Retail Box WHAT IS IN THE BOX Sennheiser HD 450BT Wireless Headphones with Active Noise Cancellation - Black PRODUCT DESCRIPTION Step up to great wireless sound with the new HD 450BT from Sennheiser. Thanks to a winning combination of superior sound quality, advanced Bluetooth technology, and an excellent 30-hour battery life, this versatile wireless headset is a companion for enjoying better audio. Whether listening to a podcast or on the go with your favourite song, you can count on the new HD 450BT to be your ultimate companion for wireless audio – whatever you listen to. Active Noise CancellationThanks to Sennheiser’s active noise cancellation and a closed back design, the HD 450BT delivers captivating sound that can be enjoyed without distraction – even in loud environmentSuperior SoundCreated 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 CompanionA great companion for travel, the HD 450BT has a superb 30-hour battery life with fast USB-C charging, a Voice Assistant button for Siri and Google Assistant interaction, and a robust folding design for take-anywhere durabilityPersonalise your SoundThe 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 the intelligibility of podcasts, audio books, and other speech content. PRODUCT INFORMATION Brand - Sennheiser Colour - Black Connectivity technology - Wireless Model name - HD 450BT Bk Form factor - Over Ear Noise control - Active Noise Cancellation Headphone jack - 3.5mm Jack Cable feature - Without Cable Item weight - 238 Grams Control type - Voice Control