Seiko Cal. 0731 - 648

This Quartz model from 1985 features a 41mm Stainless Steel case. Powered by the 0731 caliber with 23j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-fa24cef15f9c]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1985

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