Seiko Cal. 6643 - 136

The 6643-136 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6643 caliber with 28j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-1061b42ef86e]

Also known as: Rally, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1972

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