Seiko Cal. 6638 - 724

Seiko 6638-724

This Automatic model from 1970 features a 39mm PVD Black case. With its 18mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-2c4f46c39211]

Also known as: Helmet, Navigator

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
39mm
Case Thickness
13.2mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
130m
Dial Color
Champagne
Jewels
32j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1970

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seikata-wm-2c4f46c39211