Seiko Cal. 4581 - 787

The Seiko 4581-787 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-eeef33bda316]

Also known as: Tuna, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1987

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