Bluetooth bone conduction earphones, ATH-CC500BT. I used these once when I went out, but they didn't suit me, so I've been storing them at home. They are used items, as I have used them for one day. There are no noticeable dents or scratches, and they function perfectly. No claims and no returns, please. - Brand: audio-technica - Model Name: ATH-CC500BT - Type: Bone conduction earphones - Accessories: Charging cable, storage case - Connection method: Bluetooth - Features: Wireless, cartridge conduction