Seiko Cal. 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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