Seiko Cal. 3831 - 775

This Automatic model from 1986 features a 45mm Stainless Steel case. Powered by the 3831 caliber with 19j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-c10aa4d99867]

Also known as: Tuna, Bullhead

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1986

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