Seiko Cal. 4450 - 632

The 4450-632 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4450 caliber with 17j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-3795df7c03f6]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1971

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