Seiko Cal. 6631 - 276

Seiko 6631-276

This Automatic model from 1974 features a 37mm Hardlex-Coated Steel case. It features a Silver dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-f1782d5e9c64]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.7mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Silver
Jewels
33j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1974

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seikata-wm-f1782d5e9c64