Seiko Cal. 4420 - 672

The Seiko 4420-672 represents an important milestone in Seiko's 1970 lineup. Powered by the 4420 caliber with 20j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-1527da3cbf42]

Also known as: Turtle, Crown

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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