Seiko Cal. 6637 - 572

The 6637-572 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 23j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-68f7b1cca636]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1983

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