TL;DR Rogbid’s Fusion is a smart ring that looks like a shrunken smartwatch, screen and all. It goes further than many novelty ring watches by adding health and fitness tracking. The company has just launched the Rogbid Fusion, a device that looks like a smartwatch shrunk down into ring form, complete with a screen, health tracking, and even the option to wear it on your wrist instead. That’s far cheaper than most ring watches, and it comes in gold, silver, and black finishes. Physically, the Fusion falls somewhere between a smart ring and a smartwatch.