Seiko Cal. 5240 - 577

This Spring Drive model from 1987 features a 46mm Stainless Steel case. It features a Navy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-05a94ebf0f7e]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1987

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