Seiko Cal. 6631 - 371

Seiko 6631-371

This Spring Drive model from 1987 features a 42mm Titanium case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-7a4891e3b6be]

Also known as: Pogue, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
42mm
Case Thickness
14.1mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1987

Related Models

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