Seiko Cal. 4430 - 448

Seiko 4430-448

The 4430-448 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4430 caliber with 17j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-09dd7042e09b]

Also known as: Helmet

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
10.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
White
Jewels
17j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1975

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seikata-wm-09dd7042e09b