Seiko Cal. 4430 - 638

Seiko 4430-638

The 4430-638 is a sought-after Kinetic piece from Seiko's golden era. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-6e0c17f0e833]

Also known as: Helmet, Crown

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
39mm
Case Thickness
9.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
200m
Dial Color
Green
Jewels
28j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1988

Related Models

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