Seiko Cal. 4490 - 375

Seiko 4490-375

The 4490-375 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-9ad81a987b73]

Also known as: Helmet, World Timer

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
14.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
100m
Dial Color
Burgundy
Jewels
32j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1965

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