Seiko Cal. 5633 - 731

Seiko 5633-731

The 5633-731 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-eb4432176147]

Also known as: Monster, Arnie

Specifications

Movement
Solar
Case Material
Titanium
Case Width
40mm
Case Thickness
15.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
36,000 bph
Power Reserve
39 hours
Year
1970

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