Seiko Cal. 4420 - 503

The Seiko 4420-503 represents an important milestone in Seiko's 1974 lineup. Powered by the 4420 caliber with 27j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-c2396c6e8b38]

Also known as: Goldfeather, Navigator

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1974

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