7.5v (6x C NiCd rechargeable cells), charging unit provides 12v input.
The calculator alone is 245 x 132 x 70 mm. (9.6" x 5.2" x 2.75").
Was being advertised by June 1970.
Cost in U.S.A. in June 1971 US$495.
Made in Japan.
By replacing the AC power supply circuitry of its QT-8D with rechargeable cells Sharp produced this model, the world's first battery-powered electronic calculator.
To recharge the batteries the calculator is docked into a charging unit, shown on the right.
The display uses stylised "Itron" vacuum fluorescent tubes, with half-height zero, here showing 12345670.