Seiko Cal. 4450 - 433

The 4450-433 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4450 caliber with 30j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-b3bbe1e08214]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1983

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