40mm Watch Case for NH35 / NH36 / NH34 GMT / ETA 2824 / PT5000 with Sapphire and Jubilee Bracelet: The Fitment Checklist

Re-casing a watch is one of the cheapest ways to change how it looks, and one of the easiest ways to end up with a watch that does not close, does not wind or leaks. This 40mm case is listed as fitting NH35, NH36, NH34 GMT, ETA 2824 and PT5000 movements, and it comes with a sapphire crystal, a Jubilee-style bracelet and a slide buckle. Work through three checks before ordering. First, movement: those five calibres are not identical in height or stem position, so confirm with the seller which one your build uses and whether the case takes a movement spacer for it. Second, dial and hands: the case has to accept your dial's diameter and feet, and if you are using the GMT movement, remember it needs a fourth hand - a three-hand dial will not cover it. Third, the 200M figure: treat it as a rating of the case itself, not a promise about your finished watch. Water resistance lives and dies on assembly - gaskets seated correctly, case back torqued evenly, crown and tube in good order - so a home-built watch should be pressure tested before it goes anywhere near water, and honestly should be treated as splash-proof until it has been. Practical notes: this is a project part, so budget for hand-setting tools, a case back tool and silicone grease, and buy the bracelet size you actually need rather than assuming the end links match your wrist.