AKG K371-BT Bluetooth Studio Headphones, Over-Ear Closed-Back Design for Professional Performance, Foldable with 8 position hinges, 40 hour battery life, Built in Microphone, Earcup Gesture Controls

Closed-Back, Over-Ear Design - Oval earpads and closed-back design offer superior isolation and improved bass response Largest-In-Class Drivers - 50 mm titanium-coated drivers, tuned to the AKG Reference Response Curve, provide superior performance with an extended frequency response of 5 Hz to 40 kHz-unheard of at this price Wired or Wireless Listening - Listen via Bluetooth with 40-hour battery life, or connect using one of the included cables Foldable, Notched Hinge - 8-position articulated hinge, collapsible for maximum portability Slow-Retention Foam Earpads - Superior comfort and fit for longer listening sessions with less bass leakage Sleek Style - Pro performance with lifestyle fit and finish