Seiko Cal. 6644 - 523

The Seiko 6644-523 represents an important milestone in Seiko's 1970 lineup. With its 20mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-ae2ad1d6b989]

Also known as: Samurai, Navigator

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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