Seiko Cal. 0728 - 673

The Seiko 0728-673 represents an important milestone in Seiko's 1965 lineup. Powered by the 0728 caliber with 34j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-2d7e2de92136]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1965

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