Seiko Cal. 0731 - 866

The Seiko 0731-866 represents an important milestone in Seiko's 1999 lineup. With its 19mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-0641b94564d4]

Also known as: Bullhead, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1999

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