Seiko Cal. 3860 - 228

Seiko 3860-228

The 3860-228 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-f9b6bbd13b2e]

Also known as: Sportsmatic, Navigator

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
11.2mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
100m
Dial Color
Silver
Jewels
21j
Frequency
36,000 bph
Power Reserve
39 hours
Year
1975

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