The EL331ERB is 10 digit model in SharpÂs most popular desktop series & is updated with a metallic look finish & a stylish shiny cover for the solar panel & LCD screen. To minimise the number of key presses & to save time, a currency convertor & tax calculation function is included as standard. The EL331ERB is perfect for any user who requires reliability, good looks, & a larger 10 digit screen for displaying longer calculations.