Seiko Cal. 3870 - 779

This Spring Drive model from 1983 features a 41mm PVD Black case. Powered by the 3870 caliber with 33j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-d383a9e7bd73]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1983

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