The headphones turn on when you open them without pressing a button, and turn off when you close them, which is convenient in some ways and inconvenient in others. It's really easy because you don't have to press any buttons, and you don't have to worry about forgetting to turn them off. On the other hand, the power turns on and off when you don't need it to, like when you hang them around your neck or put them on a desk. I feel like it takes some getting used to. They support Hi-Res audio, but not via Bluetooth. Hi-Res is only supported when connected via a wired connection. However... I've never connected them with a wire, and I can't find the headphone cable, so it's missing (well, no one really uses a wired connection with wireless headphones...). Even with Bluetooth, I think it has a raw sound that's typical of Kenwood, which is good. I've been using them for about 4-5 months, commuting. There are some scratches, but nothing that really bothers me. There's a crack-like line on the top of the headband (it's not actually cracked leather, but it's easier to see in person). - Brand: KENWOOD - Type: Wireless Headphones - Accessories: Storage Case - Case Brand: KENWOOD Thank you for viewing.