Seiko Cal. 5638 - 966

The Seiko 5638-966 represents an important milestone in Seiko's 1973 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-af03daaac6e0]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1973

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