Seiko Cal. 5638 - 503

Seiko 5638-503

The Seiko 5638-503 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a2e24c7f57a5]

Also known as: Silverwave, Baby Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
37mm
Case Thickness
10.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Champagne
Jewels
31j
Frequency
36,000 bph
Power Reserve
66 hours
Year
1973

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