Seiko Cal. 6640 - 595

This Quartz model from 1977 features a 43mm Gold-Plated case. Powered by the 6640 caliber with 31j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-c73a36cfaca5]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1977

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