Seiko Cal. 7171 - 312

This Automatic model from 1967 features a 45mm Stainless Steel case. Powered by the 7171 caliber with 31j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-1bc5ae46fec2]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1967

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