Seiko Cal. 3831 - 510

This Hand-Winding model from 1981 features a 43mm Hardlex-Coated Steel case. Powered by the 3831 caliber with 25j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-bea1571a4acc]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1981

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