Seiko Cal. 3871 - 490

The 3871-490 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3871 caliber with 34j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-d1135fd3c0c7]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1988

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