Seiko Cal. 3815 - 412

This Solar model from 1966 features a 36mm Hardlex-Coated Steel case. Powered by the 3815 caliber with 18j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-f046e20ff6d5]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1966

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