Nelsonic is a company which made several watch games based on popular arcade games as well as TV/Movies. This one is based on Bally/Midway’s Pac Man arcade game. There are actually two versions available, one with four directional buttons, and another with a small joystick.
The price may surprise you, I know I was. It’s not a fluke either, as I can find ones in similar condition that have ended for around the same price this one is currently at. Even the loose ones can mange to fetch $30.00 – $50.00.