Flash’s tracking capabilities are all contained within the disc, which isn’t much bigger than a quarter. The disc can be inserted into a sport band to wear Flash like a watch, or into a clip, to attach to clothing or a keychain. Flash uses a common coin cell battery that Misfit claims will last up to six months. Simplicity is the name of Flash’s game: upon pressing the disc once, a ring of 12 lights will briefly show a user how much…
