Seiko Cal. 4489 - 623

Seiko 4489-623

The Seiko 4489-623 represents an important milestone in Seiko's 1972 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-bef5c7277525]

Also known as: Tuna, Helmet

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
43mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1972

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