Seiko Cal. 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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