Seiko Cal. 6644 - 646

The Seiko 6644-646 represents an important milestone in Seiko's 1974 lineup. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-fe9ab52965dd]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

36mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1974

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