Seiko Cal. 6310 - 979

This Spring Drive model from 1975 features a 37mm Stainless Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b2ecf4e2835b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1975

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