True Logic Algebraic Entry. 2 Line LCD display shows both sum & answer. A total of 240 functions. Slide on protective plastic case. Screw fixed battery cover (2 x LR44 included). 30 x AX-582BL calculators ideal for KS3/KS4. A blue extra deep Gratnells storage tray. A clear plastic lid for secure storage. A foam stacking insert for stock counting.