Seiko Cal. 3866 - 296

The Seiko 3866-296 represents an important milestone in Seiko's 1977 lineup. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-462fbfb7f9d6]

Also known as: Sumo, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

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