Seiko Cal. 0747 - 288

The Seiko 0747-288 represents an important milestone in Seiko's 1968 lineup. Powered by the 0747 caliber with 23j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-053382cad0e8]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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