Seiko Cal. 3857 - 112

This Solar model from 1975 features a 35mm Hardlex-Coated Steel case. Powered by the 3857 caliber with 28j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-e41a6044f7fb]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1975

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