Oris Caliber 400

Oris Caliber 400

Oris Caliber 400

The Oris caliber 400 is an automatic watch movement with a date. It has 21 jewels with a beat rate of 28,800, 4Hz. The calibre 400 has a power reserve of 120 hours (5 days) thanks to a twin-barrel design. Oris claims that the accuracy of this movement is rated at an average of -3/+5 seconds per day. The recommended service interval on the 400 is 10 years.

Some of the topics covered in this caliber listing:

Macro Gallery:

Oris Caliber 400 Macro 0 Oris Caliber 400 Macro 3 Oris Caliber 400 Macro 1 Oris Caliber 400 Macro 2

Dial Side:

Oris Caliber 400 Dial Side


Watches with this movement:

The Oris cal. 400 is found in the ProPilot

On March 27, 2023, Oris introduced a ProPilot X Kermit special edition with a lime green dial and a Kermit the Frog emoji on that shows up on the first of every month. Although this model has a unique datewheel, they did not issue a unique caliber number and still refer to it as caliber 400.

Additional Resources:

Note: This caliber listing is still being updated, but feel free to start discussions on it in the comments below…

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1 year ago

Oris aquis date calibre 400, so Great watch by Oris . I own the aquis calibre 400 for about 2 years without issue , warranty of course 10 years and service after 10 years . Already collectable watch. The part of 5 days power reserved is a hint for a mechanical watch .

14 days ago

It seems that Oris has released version 2 (Cal 400-2) of this caliber, to address 2 technical issues: 1- Minute hand jumping when setting time, in certain conditions; 2- Border of the rotor too light, which leads to under-winding (not enough mechanical energy stored) and stopping of the watch, under certain conditions. My Oris Aquis Date 400 already has this caliber revision seen on the back of the watch.

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