Seiko Cal. 3878 - 202

This Spring Drive model from 1979 features a 42mm Hardlex-Coated Steel case. Powered by the 3878 caliber with 17j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-f8bc300c9f35]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1979

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