Seiko Cal. 6644 - 907

The 6644-907 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6644 caliber with 33j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-7d6fba7d4703]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1977

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