Seiko Cal. 6663 - 393

The Seiko 6663-393 represents an important milestone in Seiko's 1975 lineup. Powered by the 6663 caliber with 27j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-e2fcf587dc1e]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1975

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