Overview That very watch was widely inspired by the famous step case style from the 1940s, the original waterproof chronograph case. Combined with some very Baltic-ish details, a sensible diameter, and a thin case, it was the perfect blend between modern and classic. It then seemed a perfect choice to start the brand as it was telling a lot about us without saying a single word. All the models in our Bicompax collection are equipped with the ST1901 calibre, a hand-wound mechanical chronograph movement developed by the Seagull Manufacture. It has a 42-hour power reserve and can time up to 30 minutes. The Bicompax is available with a closed caseback, or with an optional open caseback offering an unobstructed view of this column-wheel calibre Preowned and in good condition. Comes on a leather strap with one extra, and unworn leather strap. No original box. Does come with original warranty card. Includes a 2 year warranty from us at Roldorf & Co. Description Ref: 20688 Case material: 316L SteelBezel: PlainGlass: Double dome sapphireDial finish: Blue, Sector dialMovement: Automatic Seagull ST1901Power reserve: 42 hoursCrown: Regular non-screwdownWater resistance: 50m (5ATM) Dimensions Case diameter: 36.5mmLug to lug: 46mmThickness: 13 mmLug width: 20 mm