Seiko Cal. 6643 - 285

The 6643-285 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6643 caliber with 19j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-16997afc948f]

Also known as: Turtle, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1968

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