Aquis Date Caliber 400 (43.5mm)

By Oris
Reference: 400 7763 4135-07 8 24 09PEB

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Case: stainless steel with rotating bezel in blue
Size: 43.5mm
Movement: automatic-winding caliber 400
Function: date
Power Reserve: approximately 120 hours
Water Resistance: 300m
Dial: blue gradient with sunray finish
Hands: luminous hands and markers
Caseback: sapphire crystal
Strap/Bracelet: stainless steel
Factory Warranty: two years


Oris sets the new standard with Caliber 400, an anti-magnetic automatic movement independently conceived by Oris. It has a five-day power reserve (120 hours), is highly resistant to magnetism, and comes with 10-year recommended service intervals and a 10-year warranty. The first watch to carry Oris’s game-changing automatic movement is the Aquis Date Caliber 400.

The new Aquis Date, powered by Caliber 400, has several differences from the standard model. The first clue to what lies beneath are the words ‘5 days’ written on the gradient blue dial. The date window is also larger, and the date disc is black rather than white. On the reverse, the sapphire caseback is the largest we’ve ever installed in an Aquis Date, so the view into the movement is as open as it can be. At the same time, the watch is still water-resistant to 30 bar (300 meters), has a uni-directional rotating bezel with a scratchproof ceramic insert for safely timing dives, and SuperLumiNova hands and indices. It’s also equipped with Oris’s newest patented development, the Quick Strap Change system, engineered so a bracelet or strap can be released simply by lifting a flap. No tools or jeweler are required.