‎1 Lithium Ion batteries required. (included)

1, 【Active Noise Cancelling (ANC) ,Transparent Mode】: Professional advanced noise cancellation silences up to 95% of machine noise. "Transparent Mode" This feature lets in ambient noise, so you can easily hear announcements on a bus or subway, or listen to what's happening around you without removing the active noise cancelling headphones. The sensitive buttons control makes it easy to switch between this two modes. 2,【Up to 70 hours of playtime, Fast charging】: Enjoy up to 45 hours of music in noise cancelling mode, or extend the playtime to 70 hours in standard mode. A quick 5-minute charge gives you 4 hours of listening. You can charge it through the Type-C port, or use a 3.5mm audio cable for a wired connection.Note: If you are not using the over-ear wireless headphones in Bluetooth mode, please turn off ANC to conserve power. 3,【Premium sound quality, Deep Bass】: The 45mm drivers reproduce a full range of frequencies, providing deep, powerful, and immersive sound at any volume. BERIBES headphones wireless buetooth have always been committed to providing our customers with better sound quality as the focal point of our engineering. Our goal is to provide our customers with the best possible sound quality.