Seiko Cal. 3888 - 781

This Spring Drive model from 1987 features a 45mm Gold-Plated case. Powered by the 3888 caliber with 20j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-7814b329997f]

Also known as: Monster, UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1987

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