Seiko Cal. 4428 - 456

The Seiko 4428-456 represents an important milestone in Seiko's 1966 lineup. Powered by the 4428 caliber with 27j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-fe8b6efea755]

Also known as: World Timer, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1966

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