Seiko Cal. 4420 - 155

The 4420-155 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4420 caliber with 21j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-7b50cb27a685]

Also known as: Bullhead, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1991

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