Seiko Cal. 6670 - 639

Seiko 6670-639

This Spring Drive model from 1985 features a 40mm Gold-Plated case. Powered by the 6670 caliber with 32j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-efe0df719eab]

Also known as: Monster, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
8.0mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Navy
Jewels
32j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1985

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