Meet the casio mx 12b we, the enhanced version of the uk's best selling desk calculator, designed for clarity and ease of use. This robust basic desk calculator features a large, clear 12 digit display, making calculations straightforward. It's dual powered, utilising solar energy with battery backup for reliable operation.perform essential functions including addition with an extra large key, subtraction, multiplication, division, and percentages with precision. Advanced features include a square root key, positive negative number change, a 4 key memory, and a convenient mark up mu key. The large plastic keys and rubber feet ensure stability, while auto shut off conserves power. It's the perfect office companion for efficient calculations.features and benefitslarge, clear 12 digit display for easy viewingdual powered solar with battery backupperforms all major basic calculation functionsfeatures square root, percentage, and mu keysincludes a 4 key memory functiondesigned with large plastic keys and rubber feetspecificationsdisplay 12 digitspower source dual solar with battery backupfunctions basic arithmetic, percentage, square root, mumemory 4 keydimensions d x w x h 147 x 106.5 x 29 mmweight 115 g