Seiko Cal. 6690 - 421

This Hand-Winding model from 1983 features a 41mm Gold-Plated case. Powered by the 6690 caliber with 31j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-08dd28264bd6]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1983

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