Seiko Cal. 5639 - 425

Seiko 5639-425

This Automatic model from 1970 features a 41mm Hardlex-Coated Steel case. With its 21mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-a78f15803ebb]

Also known as: Navigator, Golden Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
8.1mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
150m
Dial Color
Navy
Jewels
20j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1970

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