Seiko Cal. 3811 - 287

The Seiko 3811-287 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-c213bbd38314]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1974

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