Seiko Cal. 5643 - 507

The Seiko 5643-507 represents an important milestone in Seiko's 1973 lineup. Powered by the 5643 caliber with 21j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-225c5471c916]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1973

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