The HP OfficeCalc 300 II is a desktop calculator with durable metal faceplate and has all the functions you need for quick and easy calculations at your desk or sales counter. You will appreciate the large screen and stylish design. Ideal for Office, Retail, Accounting, Home and general purpose. Tilted LCD display with kickstand and 12 digits 3 digit punctuation Power Supply: Solar cell + 1 x CR2032 battery Math Functions: Root, Sign change (+/-) Business/Finance Functions: Tax calculation, Percent, Grand Total (GT), Mark-up/-down (MU), Resume function Added Features: Memory (3 keys), Double zero key (00), Correction key () Check and Correct function Auto power off Materials: Brushed Metal/Plastic Dimensions: 158x151x29mm