Seiko Cal. 6637 - 916

Seiko 6637-916

This Spring Drive model from 1977 features a 44mm Two-Tone case. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-0d24f2057a90]

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
44mm
Case Thickness
14.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Green
Jewels
30j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1977

Related Models

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