Seiko Cal. 6644 - 593

The Seiko 6644-593 represents an important milestone in Seiko's 1987 lineup. Powered by the 6644 caliber with 23j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-2f10c0e72dba]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1987

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