Seiko Cal. 5691 - 647

The Seiko 5691-647 represents an important milestone in Seiko's 1988 lineup. Powered by the 5691 caliber with 21j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-37bad04895e7]

Also known as: UFO, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1988

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