features large and clear 12-digit display, durable and comfortable keys, solar and battery powered supply. It with standard functions, such as arithmetic keys, 3 memory keys, backspace key, percent key and MU key, great useful for office, home and school work. Features: Large and clear 12-digit display to reduce visual fatigue; with humanized tilted display for easy viewing. Two-way power supply, solar powered and 1 * AA battery(not included), extend service time. GT function to calculate the grand total. MU key for profit and loss calculation. 100/(1-20%)=100/20MU=125. Backspace key, delete the figure in front of the cursor. 3 memory keys(M+, M-, MRC), you can mark specific data, check or clear it. Big and comfortable plastic keys with durable construction. Portable mini size, nice helper for frequent calculating; improve your accuracy and efficiency.