DUAL POWER: Dual solar and battery power give this product long-lasting battery life so you never have to worry about running out of power. There is also an automatic shutdown function. The calculator will turn itself off after about 8 minutes of inactivity.(AA batteries not included)
BIG BUTTON: Desktop calculators is designed with scientific big buttons, which is ergonomic and comfortable to touchand easy to read.
CLEAR DISPLAY: Calculators offers 4-inch and clear 12-digit display that is easy to read and use, reducing eye strain
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