The Sharp ELR287BBK is a semi-desktop calculator featuring a 100 percent recycled cabinet, slanted 12-digit LCD screen and a kickstand. Other functions include a four-key memory, a grand total function, double-zero, cost/sell/margin functions, sign change, and a percent key. Its large keys and easy-to-read LCD screen make this calculator a quick and convenient machine. With its dual power feature, the ELR297BBK will automatically switch from solar to battery power in low light and from battery to solar power when low on batteries. Use this versatile and convenient semi-desktop calculator at home or at the office.