Seiko Cal. 6637 - 501

Seiko 6637-501

This Automatic model from 1965 features a 36mm Stainless Steel case. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-5ffba51b3f5e]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
15.7mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Green
Jewels
19j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1965

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