Austrian Audio Hi-X25BT Over Ear Wireless Headphones. Hi-X25BT closed-back Bluetooth headphones are a pro-level hybrid. You decide how you want to connect - via analogue (3.5 mm jack) or digital (USB-C), wired or wirelessly. Enjoy the precision and clarity of award-winning High Excursion technology wherever you are. Hybrid convenience at the professional level designed and engineered in Austria. Imagine recording a song in a professional studio, listening to your favourite music on the way home in the underground, calling your band mates while you’re at it, and then working on your song at home again without ever changing headphones. No matter where you are or how you like to work, your Hi-X25BT headphones will be there for you. Hi-X25BT headphones set the standard in connectivity. They offer analogue audio via jack, digital audio via USB-C, and absolute freedom wirelessly via Bluetooth. To keep you in the flow, they can be charged with a USB-C connection while playing music via USB-C or Bluetooth. Thanks to the built in high-efficiency battery, you can enjoy up to 30 hours of play wirelessly via Bluetooth, and of course, analogue listening is always possible.