Seiko Cal. 4420 - 230

Released in 1978, the Cal. 4420 with design code 230 was part of Seiko's domestic market collection. Powered by the 4420 caliber with 26j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-ebc277a2bfbf]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1978

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