Seiko Cal. 5633 - 913

Seiko 5633-913

This Spring Drive model from 1987 features a 37mm Stainless Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-4ac578c13eca]

Also known as: Silverwave, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
14.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Silver
Jewels
19j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1987

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seikata-wm-4ac578c13eca