Seiko Cal. 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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