Seiko Cal. 3897 - 180

This Spring Drive model from 1988 features a 39mm Hardlex-Coated Steel case. Powered by the 3897 caliber with 25j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-75319b6c0829]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1988

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