Closed Bluetooth headphones. A professional level hybrid. Analog or digital, wired or wireless connectivity. The precision and clarity of award-winning High Excursion technology wherever you are. Classic analog connection via jack, digital connection via USB-C and absolute freedom wirelessly via Bluetooth. Wireless playback even continues when charging via USB-C and analogue listening is always possible. Thanks to the integrated high-efficiency battery, they even provide up to 30 hours wirelessly via Bluetooth. The microphone and touch controls are cleverly integrated into the design. The replaceable ear pads are made of soft memory foam and adapt perfectly to the shape of your head without pinching it. The Hi-X25BT is foldable and extremely robust, as the entire basic construction of the headband, including the hinges, is metal.