Seiko Cal. 3871 - 816

This Kinetic model from 1974 features a 34mm Hardlex-Coated Steel case. Powered by the 3871 caliber with 22j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-bb5639a83f9a]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1974

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