Seiko Cal. 5641 - 227

Seiko 5641-227

This Spring Drive model from 1972 features a 41mm Gold-Plated case. Powered by the 5641 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-f8344b9f8392]

Also known as: Sumo, Rally

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
8.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Navy
Jewels
17j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1972

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