Amazon.com: ELECOM 2.4GHz Wireless Finger-operated Large …

Wow.. everything is in Chinese/japanese (made in China but i think its japanese branding) that matters not. has the dongle, has batteries.. 10 mins later its on the PC and running. right away its smooth.. like fluid smooth.. the ball is like nothing is there. it floats within the housing. the mouse icon glides effortless across the screen.

https://www.amazon.com/ELECOM-M-HT1DRBK-Wireless-Trackball-Mouse/dp/B0735584RM