MODEL- F502 VENDOR- CANON USA FEATURES- Scientific Statistical Calculator The F-502 is a pocket-sized statistical calculator that handles up to 136 functions, and its large, high-contrast liquid crystal display makes calculations easy and comfortable. The calculator includes trigonometric standard deviation, hexadecimal conventions, number base conversions and calculation memory. The F-502 also provides a removable hard cover case, which protects your calculator against damage when you re on the move. Display type: Floating, Scientific Exponential Liquid Crystal Display. 136 Total Functions Power Source: 2 alkaline batteries (LR-44) Easy to read description of key functions Large, durable plastic keytops Protective hard cover case included