Seiko Cal. 4427 - 798

The Seiko 4427-798 represents an important milestone in Seiko's 1977 lineup. Powered by the 4427 caliber with 30j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-7ee48e7c5bdd]

Also known as: Rally, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1977

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