Seiko Cal. 5639 - 745

Seiko 5639-745

The 5639-745 is a sought-after Kinetic piece from Seiko's golden era. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-af3424b29f40]

Also known as: Monster, World Timer

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
14.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
180m
Dial Color
White
Jewels
22j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1974

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