Seiko Cal. 6311 - 247

The Seiko 6311-247 represents an important milestone in Seiko's 1970 lineup. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-21842952a9b5]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1970

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