Seiko Cal. 3870 - 178

This Solar model from 1976 features a 37mm Hardlex-Coated Steel case. Powered by the 3870 caliber with 30j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-74560725d219]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1976

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