Seiko Cal. 6645 - 611

The Seiko 6645-611 represents an important milestone in Seiko's 1991 lineup. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-3c8cc7fd243a]

Also known as: Samurai, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1991

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