Seiko Cal. 6646 - 491

The Seiko 6646-491 represents an important milestone in Seiko's 1979 lineup. Powered by the 6646 caliber with 26j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-49a1d1350b25]

Also known as: World Timer, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1979

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