Seiko Cal. 5641 - 567

This Spring Drive model from 1967 features a 42mm PVD Black case. Powered by the 5641 caliber with 25j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-24601a5fa8ba]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1967

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