Seiko Cal. 4537 - 663

Seiko 4537-663

This Automatic model from 1965 features a 35mm Hardlex-Coated Steel case. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-5d1a6dcf2d89]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
13.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
21j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1965

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