Seiko Cal. 0726 - 640

The Seiko 0726-640 represents an important milestone in Seiko's 1979 lineup. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-211bf05d2671]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1979

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