Seiko Cal. 3871 - 683

Seiko 3871-683

This Spring Drive model from 1998 features a 37mm Hardlex-Coated Steel case. Powered by the 3871 caliber with 30j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-250e4289f0fb]

Also known as: Golden Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
9.6mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
36,000 bph
Power Reserve
66 hours
Year
1998

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