Seiko Cal. 0721 - 711

The Seiko 0721-711 represents an important milestone in Seiko's 1974 lineup. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-49108acc1ee2]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1974

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