Seiko Cal. 4430 - 447

Seiko 4430-447

The 4430-447 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4430 caliber with 30j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-d1125a23ece7]

Also known as: UFO

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
40mm
Case Thickness
11.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Green
Jewels
30j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1969

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