A watch that flashes and spins!
This is another 'gimmick watch' styled for classic Sonic. This is sold at JC Penny stores, in the 'kids accessories' area in 2018. The box is very Sonic-centric with designs and faces all over. The watch is a simple one though, it has that little rectangle window for the actual time-piece part (so, that is generic) and the face is printed with Green Hill graphics, plus a Sonic. The band also has Sonic art all over it, and a traditional metal buckle.
The gimmick is white LED lights under the face. They appear to shine 'colors' because they show through the colored art. The lights blink, and twirl when you activate it with the button on the side. It's an exciting gimmick to get kids to want to wear a watch--though it doesn't have a whole lot to do with Sonic, other than illuminating him with colors. This should be about 14.99 if you find it in stores.