Seiko Cal. 6391 - 553

The Seiko 6391-553 represents an important milestone in Seiko's 1991 lineup. Powered by the 6391 caliber with 28j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-ff208ce8ca6e]

Also known as: Navigator, Emperor

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1991

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