Seiko Cal. 3861 - 878

Seiko 3861-878

The 3861-878 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3861 caliber with 36j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-751ed3a73e21]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
44mm
Case Thickness
10.6mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Burgundy
Jewels
36j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1990

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seikata-wm-751ed3a73e21