Sanwa Supply MA-RING2BK Ring Mouse, USB Wireless, Rechargeable, Compact, 1200dpi, Black

This is a mouse that can be worn on your finger and operated with your thumb. It simply fits like a ring, so you can use the keyboard and do other tasks while wearing the ring mouse. Since it is worn on your finger and operated, you can easily operate your computer while lying on the sofa or in bed. It is equipped with a PowerPoint mode that supports PowerPoint blackout and page turning. *MacOS PowerPoint version 16 or later is required. The receiver can be stored in the device to prevent it from getting lost when carrying it around.