Seiko Cal. 4427 - 570

The Seiko 4427-570 represents an important milestone in Seiko's 1976 lineup. Powered by the 4427 caliber with 30j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-65100443ae68]

Also known as: Sumo, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1976

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