Seiko Cal. 4440 - 390

The Seiko 4440-390 represents an important milestone in Seiko's 1987 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-999c74b882a2]

Also known as: UFO, World Timer

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1987

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