40 hours battery time Active Noise Cancelling - blocks out, outside noise Transparent Mode - when active, help you hear outside noise like traffic Quick Charge - 15 minutes charge = 8 hours battery Integrated buttons to play, pause and more Hands free calling Over ear design Foldable, ear pads tilt and adjustable headband 40 hours of battery life Introducing MIXX StreamQ C4 NOISE CANCELLING HEADPHONES: a perfect combination of state-of-the-art technology and sophisticated design. Featuring ANC noise cancelling, over ear construction, and a foldable design, these headphones offer a comfortable and luxurious listening experience. Enjoy up to 40 hours of battery life and quick charge of 15 minutes for 8 hours of listening. The transparent mode allows you to hear important outside noise like traffic, while integrated contoured buttons let you play, pause, and more. Elevate your audio experience with MIXX SteamQ C4 Wireless Headphones.