Seiko Cal. 3871 - 140

The 3871-140 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3871 caliber with 30j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-a28155c22c00]

Also known as: Sumo, Rally

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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