Seiko Cal. 3817 - 252

This Solar model from 1976 features a 38mm PVD Black case. Powered by the 3817 caliber with 21j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-f8d2104c8ba0]

Also known as: Monster, Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1976

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