Seiko Cal. 7131 - 302

This Spring Drive model from 1988 features a 44mm Titanium case. Powered by the 7131 caliber with 21j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-e343e70ee5d5]

Also known as: UFO, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1988

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