Seiko Cal. 3865 - 139

Seiko 3865-139

The 3865-139 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3865 caliber with 28j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-e88129c7e923]

Also known as: Rally, Sportsmatic

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
43mm
Case Thickness
13.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
40m
Dial Color
Navy
Jewels
28j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1983

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