Seiko Cal. 5633 - 870

The Seiko 5633-870 represents an important milestone in Seiko's 1977 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-8f7486118d9e]

Also known as: Samurai, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1977

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