Seiko Cal. 4428 - 904

The Seiko 4428-904 represents an important milestone in Seiko's 1981 lineup. Powered by the 4428 caliber with 32j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-ef4e9db1ff90]

Also known as: Rally, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1981

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