Seiko Cal. 6646 - 800

The Seiko 6646-800 represents an important milestone in Seiko's 1975 lineup. Powered by the 6646 caliber with 22j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-ad8b5a60c54a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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