AKG K361-BT Professional Studio Headphones strike the perfect balance between professional-grade quality and consumer-friendly fit, comfort and portability. Combining cutting-edge performance, Bluetooth connectivity, extended frequency response and supreme comfort in a closedback, over-the-ear, folding design, the K361-BT headphones are perfectly suited for life in the studio or on the go. Content creators and musicians need headphones that deliver uncompromising fidelity and performance while standing up to their mobile lifestyles. Whether you're an artist, producer or discriminating audiophile, you can trust K361-BT headphones to reproduce natural, balanced audio, precisely as intended-anytime, anywhere. Uncompromising Fidelity When it comes to studio headphones, nothing matters more than accuracy. The K361-BT features best-in-class sensitivity and frequency response, largest-in-class 50 mm drivers and pure oxygen-free copper voice coils for the utmost acoustic precision, delivering authoritative bass, articulate midrange and pristine highs with detail and clarity. Robust and Roadworthy for Mobile Lifestyles K361-BT headphones pack down tight for portability, thanks to a foldable design with swiveling earcups. A rigorous stress test was performed to ensure the K361-BT will perform reliably in demanding applications. Supreme Comfort, Sleek Style The K361-BT is gorgeously styled with plush, slow-retention foam earpads in an over-ear, closed-back design for superior isolation and long-wearing comfort, even over the longest sessions. The lightweight design features ergonomically contoured, foldable, adjustable calibrated headbands for a perfect, repeatable fit, every time. The Freedom of Bluetooth AKG K361-BTs feature Bluetooth 5.0 technology for up to 24 hours of wireless operation. Enjoy the freedom of movement that comes with Bluetooth, or plug in one of the included cables for traditional use. The hybrid wired/Bluetooth design lets you reference your mixes in both configurations to ensure your productions translate to a variety of listening scenarios. An integrated microphone also adds the benefit of phone or VoIP calling. ***For a limited time, we will include a mystery-free gift in consumer electronics worth £30 (in manufacturer RRP/SRP value) with this product, subject to availability and provided offer is at full retail price or no other offer involved. Please note this gift cannot be exchanged with any other product or refunded.***  Specifications TypeClosed Back Freq. Response15 Hz - 28 kHz Driver Size50mm Impedance32 ohms Battery Life Up to 24hrs ConnectivityWired & Bluetooth 5.0 Weight260g