Seiko Cal. 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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