Seiko Cal. 6313 - 937

This Spring Drive model from 1978 features a 38mm PVD Black case. Powered by the 6313 caliber with 25j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-db85ce741811]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1978

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