The desktop calculator is powered by a dual power supply of solar panels and AA battery(1 AA Battery included) for long life and is not affected by the interruption of electricity during use.
 
The large calculator has environmentally friendly plastic large keys,more suitable for fingers,comfortable touch and fast response.
 
The Calculator is designed with a raised head,so that the display angle of the screen can meet the human eyesight habits.The screen adopts a 12-bit LCD display,which can easily and clearly view the screen content.