Seiko Cal. 6131 - 251

Seiko 6131-251

This Spring Drive model from 1978 features a 45mm Gold-Plated case. Powered by the 6131 caliber with 25j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-ca72aeb216a2]

Also known as: Sumo, Silverwave

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
11.1mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Silver
Jewels
25j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1978

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seikata-wm-ca72aeb216a2