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You are here: Home / Movements / SW285-1 M a

SW285-1 M a

Last Update: June 4, 2019

Brand:Sellita
Family:
Sellita SW200 Family
Height:4.15 mm
Jewels:19
Reserve:42 hours
Frequency:28,800 A/h
Winding:Hand winding
Diameter:25.60 mm (11.5 ligne)
  Complications:Date, Day/Night Indicator, Moon Phase, Quick Date Correction
Hands:Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Window at 3:00, Day/Night Indicator Pointer at 10:00, Moon Phase Wheel at 6:00
Distinguishing Technical Characteristics
Hand-Winding
Clockwise Balance Cock
Screw Regulator
Balance at 12:00
Production: 2019 – Current
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. SW285-1 M a is a hand-winding movement with moon phase, day/night indicator, and date from Sellita. Like other Sellita SW200 movements, it is based on the design of the ETA 2800 family, though ETA does not sell a direct competitor with the same functions. Sellita has produced this movement since 2019. Cal. SW285-1 a is an automatic version.

The moon phase is indicated using a disc located at 6:00 on the dial and the date is located at 3:00. The day/night indicator is a pointer in a subdial at 10:00. This is very similar to Cal. SW285-1 M b, which differs in that it uses a disc for the day/night indicator.

Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.

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