Seiko Cal. 3866 - 706

Seiko 3866-706

This Automatic model from 1983 features a 42mm Hardlex-Coated Steel case. Powered by the 3866 caliber with 19j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-59c8bfbb98b1]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
11.5mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
19j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1983

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