Seiko Cal. 5668 - 643

The Seiko 5668-643 represents an important milestone in Seiko's 1985 lineup. Powered by the 5668 caliber with 35j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-d6c8f867ba77]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1985

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