This is a junk item. This is a remote control for a Blu-ray recorder that I used to own. The recorder itself was disposed of due to a malfunction, leaving only the remote control. I tried putting batteries in it this time, but the infrared part didn't light up, and I haven't been able to confirm its operation. Assuming it's a defective item/junk item, I would appreciate it if someone could find a use for it.