Seiko Cal. 3871 - 660

The Seiko 3871-660 represents an important milestone in Seiko's 1979 lineup. Powered by the 3871 caliber with 29j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-17555e0a7d72]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1979

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