Seiko Cal. 6646 - 938

The Seiko 6646-938 represents an important milestone in Seiko's 1991 lineup. Powered by the 6646 caliber with 21j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-f1c680df0754]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1991

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