Family: Sellita41h power reserve
The SW 221-1 is an automatic movement manufactured by Sellita and modified by Mühle Glashütte with their patented Woodpecker neck regulator. It provides a 41-hour power reserve. The movement powers watches in Mühle's 29er collection and remains in production. This is not an in-house caliber; Mühle modifies standard Sellita bases for use in its tool watches.
Last updated 29 Apr 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Power Reserve
41h
Display Type
Analog
QUICK FACTS
FOR WATCH DEALERS
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