Seiko Cal. 6643 - 560

The Seiko 6643-560 represents an important milestone in Seiko's 1978 lineup. Powered by the 6643 caliber with 24j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-b2aabb6c19c7]

Also known as: Panda

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1978

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