Seiko Cal. 5643 - 394

The Seiko 5643-394 represents an important milestone in Seiko's 1973 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-a4183f22a5a7]

Also known as: UFO, World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1973

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