Seiko Cal. 5240 - 566

The Seiko 5240-566 represents an important milestone in Seiko's 1966 lineup. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-c6ba2c03a435]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1966

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