Seiko Cal. 6638 - 318

Seiko 6638-318

This Hand-Winding model from 1976 features a 36mm Hardlex-Coated Steel case. With its 18mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-2950775284d8]

Also known as: Crown, Flighty

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
14.7mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Green
Jewels
30j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1976

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seikata-wm-2950775284d8