COSC chronometer certified
Commander Chronometer
M021.431.11.031.00 - ∅ 40mm
- Additional 3-year guarantee
- Power reserve up to 80 hours
- Transparent caseback
Technical specs
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Family Internet Text
This Commander Swiss watch adapts the iconic piece to the modern codes. Featuring the latest MIDO logo and a graduated dial, it also has a sapphire bevelled glass. Its automatic movement is chronometer certified and offers up to 80 hours of power reserve.
User manual
The MIDO user's manual give information about the use, the settings and the maintenance of the different MIDO watches.
For example, be careful not to set the date between 8 p.m. and 2 a.m. to preserve your mechanical watch.
![Chronometer COSC](/media/content/technical-content-block/new-technical-content-block-cosc.jpg?im=Resize=(60,45),aspect=fill;Blur=4&q=1)
Chronometer COSC
The tests run by the COSC include the verification of the engraved number on the watch movement and controls in a testing environment. Each movement is individually tested following a strict procedure that lasts several days in five positions and at different temperatures (8°C, 23°C and 38°C). Over 15 days, the movements go though daily controls. Every day - including Saturday and Sunday - the instruments are measured and wound. If it meets the standards, the movement is "Chronometer" certified.
![Stainless steel](/media/content/technical-content-block/technical-content-block-stainless-steel.jpg?im=Resize=(60,45),aspect=fill;Blur=4&q=1)
Stainless steel
![Watch glass](/media/content/technical-content-block/technical-content-block-watch-glass.jpg?im=Resize=(60,45),aspect=fill;Blur=4&q=1)