Seiko Cal. 6643 - 299

The Seiko 6643-299 represents an important milestone in Seiko's 1970 lineup. Powered by the 6643 caliber with 30j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-d0b551f4d8a0]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1970

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