Seiko Cal. 3870 - 977

The Seiko 3870-977 represents an important milestone in Seiko's 1967 lineup. Powered by the 3870 caliber with 22j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-89eeebe264dc]

Also known as: Rally, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1967

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