Seiko Cal. 3866 - 620

Seiko 3866-620

This Hand-Winding model from 1979 features a 44mm Titanium case. With its 19mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-b00611e2f50e]

Also known as: Helmet

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
44mm
Case Thickness
9.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
180m
Dial Color
Champagne
Jewels
35j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1979

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