Seiko Cal. 4498 - 640

Seiko 4498-640

The 4498-640 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-6b54098c81b1]

Also known as: Rally, Silverwave

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
40mm
Case Thickness
13.0mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
40m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1998

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