Seiko Cal. 3897 - 180

Seiko 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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