Seiko Cal. 6649 - 636

The Seiko 6649-636 represents an important milestone in Seiko's 1968 lineup. Powered by the 6649 caliber with 18j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-bbe90273bf81]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1968

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