Check out this newly launched ‘Ring Mouse 2 (400-MA077)’ from Sanwa. Designed to be attached to the tip of a finger, this ultra-compact 5-button wireless mouse features a 2.4GHz radio frequency (works up to 10 meters), a 500/1000/1500/2000dpi resolution (switchable) and a micro-USB charging port.
Powered by a built-in 80mAh battery (up to 10 hours of continuous operating time), the Ring Mouse 2 (400-MA077) comes with a storable micro USB receiver and supports for Windows 10, Windows 8.1, Windows 8, Windows 7 and Mac OS X (10.3 and later) operating systems.
Measuring W28mm x D36.7mm x H34.7mm and weighing 9.6 grams, the Ring Mouse 2 (400-MA077) is available now for 5,480 Yen (about $52). [Product Page]