Seiko Cal. 3871 - 186

Seiko 3871-186

The 3871-186 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3871 caliber with 27j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-9a47e6364733]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
11.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
60m
Dial Color
Burgundy
Jewels
27j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1986

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seikata-wm-9a47e6364733