The over-ear headphones deliver Bang & Olufsen Signature Sound with advanced ANC. The acoustics are expertly tuned by our sound engineers to deliver rich and powerful listening experiences. Transparency Mode lets you hear your surroundings, when you need to for 25 hours of playtime. This time with a dedicated button for voice assistant. This feature lets you manage your life on the go. Simply press and hold the dedicated voice button and your assistant is ready for you.