Seiko Cal. 6645 - 437

The Seiko 6645-437 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-7b9ee0cb4ecd]

Also known as: Samurai, Bellmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1988

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