Seiko Cal. 7031 - 403

This Spring Drive model from 1980 features a 38mm Titanium case. Powered by the 7031 caliber with 32j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-ea12bb20f490]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1980

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