Seiko Cal. 5640 - 277

Seiko 5640-277

This Spring Drive model from 1965 features a 38mm Stainless Steel case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-b82a51cad20b]

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
14.7mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Green
Jewels
35j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1965

Related Models

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