Urwerk Caliber Ur 9 01

Urwerk Caliber UR-9.01

Urwerk Caliber Ur 9 01

Caliber NumberUR-9.01
Movement TypeAutomatic, self-winding
Total PartsUnknown (please add to comments below)
Power Reserve39 hours
Vibrations Per Hour28,800 (4Hz)
Balance Spring
EscapementSwiss Lever
FeaturesHours, minutes, small seconds, day/night indicator, oil change indicator
Country of ManufactureSwitzerland
Known ModelsUrwerk UR-110

The Urwerk caliber UR-9.01 is an automatic movement designed in-house by Urwerk Geneve. This movement is found in the Urwerk model UR-110.

Materials and Finish

The materials that make up the caliber UR-9.01 are a brass baseplate and satellite system, as well as ARCAP alloy for the central satellite. ARCAP alloys can contain nickel, copper, cobalt, tin, lead and zinc, but do not have iron so they are anti-magnetic.

The movement features circular graining finish, diamond polishing, chamfered screw heads and polished screw heads.

Unique Indication

The movement tells time via a revolving satellite complication with wandering hour modules mounted on planetary gears. There is a small seconds dial, day night indicator, as well as an “oil change” indicator which notifies the wearer that it is time for an overhaul.

About the Oil Change Indicator in Urwerk’s own words:

“The “Oil Change” indicator alerts the user when a service is due after three years, with the dial changing from white (years one to three) to red (years three to five). This counter is reset to zero when the timepiece is serviced.”

Extra Info

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Joe Coleman
Joe Coleman
2 years ago

This movement looks so cool I really like the design. Very unique. The only thing I don’t think I can get on board with is the oil change light. This sounds like a check engine light on a car. I guess I’d have to know the maintenance intervals and cost of service before I’d jump on this train. If time goes by and the light comes on and you aren’t really ready to send it… Read more »

Advocate AIDROOS
Advocate AIDROOS
11 months ago
Reply to  Joe Coleman

I sevice my De Ville 3 years from the last service. My Seiko every 5 years. Nomos same as Omega. Never serviced my 3 Star, yet it keeps the best time out of the lot.

Venus Caliber 178
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