Laid flat, Boost is about 10” long from one end to the other, and 0.75” wide. Most of that length is the flexible silicone band, which has 14 rows of holes, allowing for quite a bit of size adjustment. The rest is the module that does the tracking; it’s a hump under the silicone, with plastic and a pair of metal contacts exposed on the underside. The top side has a small, raised button, as well as a shallow indentation. Finally,…
