Seiko Cal. 5698 - 231

The Seiko 5698-231 represents an important milestone in Seiko's 1972 lineup. Powered by the 5698 caliber with 24j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-79d6e6ea6e6f]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1972

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