The Tiefenmesser collection takes its inspiration from the materials that feature so prominently in submarine equipment: the steel of the instruments measuring pressure and depth, and the bronze and brass of a periscope – all of these being the hallmark of what makes these models so unique. The three Tiefenmesser models have a white or black dial, a blue steel hand, industrial-style black and blue index markings, aged leather straps and a single aperture for the hour. The power reserve here is displayed in the form of a mechanical gauge with a red or yellow background. These submersible models are watertight to 50 metres.