Seiko Cal. 3870 - 683

The Seiko 3870-683 represents an important milestone in Seiko's 1974 lineup. Powered by the 3870 caliber with 36j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-d6509cfb02fc]

Also known as: Monster, Flighty

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1974

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