Seiko Cal. 6649 - 538

The Seiko 6649-538 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 36 hours power reserve. [seikata-wm-ba959b37fe87]

Also known as: UFO, Goldfeather

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1968

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