Seiko Cal. 5641 - 273

This Spring Drive model from 1982 features a 37mm Stainless Steel case. Powered by the 5641 caliber with 19j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-88278a9ca9b9]

Also known as: Rally, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1982

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