Seiko Cal. 6643 - 726

The 6643-726 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6643 caliber with 19j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-5665d1f431f0]

Also known as: Samurai

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1978

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