Seiko Cal. 4430 - 638

Seiko 4430-638

The Seiko 4430-638 represents an important milestone in Seiko's 1990 lineup. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-12fe04a7f5c1]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
11.4mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
170m
Dial Color
Burgundy
Jewels
36j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1990

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