Seiko Cal. 3813 - 143

This Solar model from 1976 features a 41mm Hardlex-Coated Steel case. Powered by the 3813 caliber with 27j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-b4ae5845b2f1]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1976

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