Seiko Cal. 3817 - 657

Seiko 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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seikata-wm-b38537236189