Seiko Cal. 5638 - 588

Seiko 5638-588

The 5638-588 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5638 caliber with 31j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-17a43ad5f915]

Also known as: Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
42mm
Case Thickness
9.8mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
130m
Dial Color
White
Jewels
31j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1988

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seikata-wm-17a43ad5f915