Seiko Cal. 6643 - 129

The Seiko 6643-129 represents an important milestone in Seiko's 1965 lineup. Powered by the 6643 caliber with 34j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-a032ee2de0e8]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1965

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