Seiko Cal. 6636 - 722

The Seiko 6636-722 represents an important milestone in Seiko's 1985 lineup. Powered by the 6636 caliber with 23j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-d7fb0dfb7588]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1985

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