Seiko Cal. 3817 - 657

This Spring Drive model from 1984 features a 41mm Stainless Steel case. Powered by the 3817 caliber with 23j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-b38537236189]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1984

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