Seiko Cal. 3870 - 555

This Spring Drive model from 1985 features a 34mm Hardlex-Coated Steel case. Powered by the 3870 caliber with 22j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-1eea23bf1261]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1985

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