Seiko Cal. 3871 - 490

Seiko 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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