We'll get to the novel functionality in a moment, but let's start with the basics. The Obscura is a steel sports watch with a dive-style layout on a 38mm wide case that is 40mm across the bezel, 11.7mm thick, link and 47mm lug to lug. The water resistance is 100m, and the watch comes with a steel bracelet (with quick release and Nodus' NodeX tool-less micro adjust) and a rubber strap.