Seiko Cal. 5664 - 720

The Seiko 5664-720 represents an important milestone in Seiko's 1970 lineup. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-ed3ec17e9c85]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1970

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