Seiko Cal. 5638 - 437

Seiko 5638-437

The 5638-437 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5638 caliber with 33j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-71a8439373f9]

Also known as: World Timer

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
44mm
Case Thickness
15.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
200m
Dial Color
Champagne
Jewels
33j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1967

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seikata-wm-71a8439373f9