Seiko Cal. 3866 - 639

Seiko 3866-639

The Seiko 3866-639 represents an important milestone in Seiko's 1985 lineup. Powered by the 3866 caliber with 26j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-7840f5a5a68e]

Also known as: Turtle, Shogun

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
36mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Navy
Jewels
26j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1985

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seikata-wm-7840f5a5a68e