Seiko Cal. 5639 - 663

Seiko 5639-663

This Automatic model from 1999 features a 36mm Hardlex-Coated Steel case. With its 20mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-673cdb791a00]

Also known as: Samurai, Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
9.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
160m
Dial Color
Navy
Jewels
20j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1999

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