Seiko Cal. 3871 - 138

The Seiko 3871-138 represents an important milestone in Seiko's 1974 lineup. Powered by the 3871 caliber with 31j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-7458c025ef1d]

Also known as: Silverwave, Flighty

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1974

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