Seiko Cal. 4556 - 830

The Seiko 4556-830 represents an important milestone in Seiko's 1987 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-2aa81c2a7ece]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1987

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