Seiko Cal. 4429 - 657

Seiko 4429-657

The 4429-657 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-026ef6d9fb9c]

Also known as: Bullhead, Helmet

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
11.6mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
50m
Dial Color
Silver
Jewels
20j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1979

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