Seiko Cal. 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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