Seiko Cal. 0731 - 729

The Seiko 0731-729 represents an important milestone in Seiko's 1970 lineup. Powered by the 0731 caliber with 36j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-9d142c619e4b]

Also known as: Samurai, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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