Seiko Cal. 3866 - 392

Seiko 3866-392

This Spring Drive model from 1979 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-1b4d5055ae3a]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
10.3mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
67 hours
Year
1979

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