Seiko Cal. 0728 - 805

The Seiko 0728-805 represents an important milestone in Seiko's 1972 lineup. Powered by the 0728 caliber with 24j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-b97a60a4eac7]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1972

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