Seiko Cal. 0731 - 866

The Seiko 0731-866 represents an important milestone in Seiko's 1969 lineup. Powered by the 0731 caliber with 19j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-fd822877b01a]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1969

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