Wireless mini keyboard with a touchpad. Approximately 14.5cm wide. Use by inserting the USB receiver, located inside the battery cover, into a PC, etc. Please prepare two AAA batteries. I bought this to use when mirroring my PC to a TV screen, but I haven't had much opportunity to do so, so I'm offering it to someone who needs it. Although I haven't actually used it, I have opened it for photography and confirmed its operation on a Windows 11 PC. Button operation and touchpad operation are both good. *The outer box has a torn area. Please check the third photo.