Seiko Cal. 6643 - 700

The 6643-700 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6643 caliber with 34j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-10ba22fe8bcb]

Also known as: Samurai, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1980

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