Seiko Cal. 6633 - 640

The Seiko 6633-640 represents an important milestone in Seiko's 1984 lineup. With its 18mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-991546396390]

Also known as: Panda, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1984

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