Seiko Cal. 5636 - 991

Released in 1978, the Cal. 5636 with design code 991 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-1a859c7d0c3f]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1978

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