Seiko Cal. 3866 - 745

Seiko 3866-745

The 3866-745 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-4f8a7c1baf28]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
10.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Burgundy
Jewels
24j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1974

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