Seiko Cal. 6643 - 871

The 6643-871 is a sought-after Solar piece from Seiko's golden era. Powered by the 6643 caliber with 33j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-92d0f3bad10d]

Also known as: Rally

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1966

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