Seiko Cal. 5663 - 610

The Seiko 5663-610 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-4482d07b3ed1]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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