Seiko Cal. 5633 - 531

This Automatic model from 1980 features a 38mm Titanium case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-882643893a69]

Also known as: UFO, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1980

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