The Casio MS-120FM is a 12 digit desk calculator with LC display. This model is powered by dual solar and battery power. The calculator has plastic keys, metal faceplate and rubber feet. Functions include tax calculation, pro-percentage, mark up with percentage key, cost/sell/margin, sign change and key rollover. With back up battery and auto power off this calcualtor is perfect for use at home or at work. 12 digit desk calculator LC display Solar/battery power and backup battery Auto power off Plastic keys, metal faceplate and rubber feet Tax calculation, Pro-percentage Mark up with percentage key, Cost/sell/margin Sign change (+/-), Key rollover 3 key memory, double zero key Dimensions: 101x27.6x148.5mm