PSB M4U 8 MKII Wireless Bluetooth® over-ear headphones with active noise cancellation B-Stock

Product highlights: over-ear headphones with closed back design to help block out noise 40mm drivers offer detailed sound with low distortion personal sound calibration by Audiodo™ in the PSB Headphones app Bluetooth connectivity for wireless music listening and phone calls aptX® HD and AAC decoding provides high-quality music streaming from compatible devices advanced Bluetooth chipset provides strong, reliable wireless connection RoomFeel™ tuning helps recreate the sound of PSB speakers in a listening room Active Noise Cancellation: noise-canceling circuitry minimizes external sounds four built-in noise-canceling mics Transparency Mode lets you hear external sounds at the push of a button built-in rechargeable battery 18 hours wireless use with noise cancellation 25 hours in wireless "active" mode without noise canceling "passive mode" requires no battery for wired listening without noise cancellation General Info and Specs: earcup controls let you answer calls, play/pa