Seiko Cal. 6678 - 593

The Seiko 6678-593 represents an important milestone in Seiko's 1968 lineup. Powered by the 6678 caliber with 19j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-e1dd6068eb41]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1968

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