Seiko Cal. 4435 - 637

Seiko 4435-637

The 4435-637 is a sought-after Kinetic piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-2e5707d4ec8d]

Also known as: Helmet

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
11.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1999

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