Seiko Cal. 4564 - 631

Seiko 4564-631

This Automatic model from 1988 features a 40mm Hardlex-Coated Steel case. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-295c9b6f67e7]

Also known as: World Timer, Navigator

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
12.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1988

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