The Sharp ELR297BBK desk calculator is made from 100% post consumer recycled plastic & also features dual solar & battery power. Large 18mm digits together with a fold away kick stand help make the LCD screen easy to view & to reduce any potential misreading of numbers, the ELR287BBK features 3 digit punctuation. To avoid any keying-in errors, the large easy to view 13 x 15mm sized keys are organised into different colour groups with the 4 key memory in an easy to identify green colour. The ELR287BBK LCD display is protected by a &8216;glass top&8217; clear acrylic panel to prevent dust & grime from building up along the edges of the LCD & Solar panel. Eco friendly & with a tough construction, the ELR297BBK is the perfect home or business partner.