Seiko Cal. 7171 - 312

Seiko 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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