Seiko Cal. 6331 - 138

Seiko 6331-138

This Quartz model from 1982 features a 42mm Hardlex-Coated Steel case. Powered by the 6331 caliber with 30j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-fb7b19efad67]

Also known as: Turtle, Sumo

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
15.7mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Cream
Jewels
30j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1982

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