• SW210-1 a: Date
• SW210-1 b: No Date

Cal. SW210-1 is a hand-winding movement from Sellita. Like other Sellita SW200 movements, it is based on the design of the ETA 2800 family, and is very similar to ETA’s Cal. 2801-2. Sellita has produced Cal. SW210-1 since 2014, with the name updated with the “M” suffix since 2018. Sellita does not make an automatic movement with no date.

Sellita’s SW210-1 M has two more jewels than ETA’s 2801-2, at 19. Most other specifications are similar.