The Casio MX-12B is ideal for both the office and home use. This calculator from Casio has a 12 digit large LC display with a plastic cover and hardwearing plastic keys for ease of use. Functions include Percentage Calculations (Standard Logic), Mark Up Function and 4-Key Memory. It is powered by dual solar and battery power. The versatile Casio desktop calculator is white in colour and will blend in with most settings.