Seiko Cal. 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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