Seiko Cal. 3891 - 939

Seiko 3891-939

This Automatic model from 1975 features a 36mm Stainless Steel case. Powered by the 3891 caliber with 26j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-9950d58ea31a]

Also known as: Golden Tuna

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
9.4mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
150m
Dial Color
Champagne
Jewels
26j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1975

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