Following the launch of the Calibre 400 in-house movement for the 43.5-mm Aquis Date range, Oris has unveiled a slightly smaller Aquis model with the new movement, the new Aquis Date Calibre 400 with a diameter of 41.5 mm.

The brand’s latest diver’s watch is available with either a blue (Ref. 400 7769 4135), anthracite (Ref. 400 7769 4154) or green dial (Ref. 400 7769 4157), all with matching ceramic inserts for the bezel.

The Oris Caliber 400 is regulated to -3/+5 seconds a day and features non-ferrous alloys, 120-hour (or 5-day) power reserve (via twin barrels), and a 10-year extended warranty and service recommendation. The movement is protected via a sapphire caseback, which assists in providing this diver’s watch with a 300-meter water resistance.