Seiko Cal. 6661 - 645

This Spring Drive model from 1988 features a 41mm Stainless Steel case. Powered by the 6661 caliber with 34j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-620dc4dd90a6]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1988

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