Seiko Cal. 6638 - 485

Seiko 6638-485

This Hand-Winding model from 1973 features a 37mm PVD Black case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5f8997c7c0f3]

Also known as: Bellmatic

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
8.3mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
White
Jewels
32j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1973

Related Models

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