Dot matrix display Dot matrix display High-resolution screen provides beautiful looking graphs every time. Multi-replay Multi-replay Quick and easy recall of previously executed formulas for editing and re-execution. Plastic keys Plastic keys Designed and engineered for easy operation. S-V.P.A.M. S-V.P.A.M. (Super Visually Perfect Algebraic Method) All the features of the existing V.P.A.M. series plus a new 2-line display and a useful Replay function. All this helps to make mathematics easier to use and easier to understand than ever before. STAT-data editor STAT-data editor Back-step viewing and editing of input data. Basic Mathematical Functions Trigonometric, Exponential logarithmic, etc. Basic Statistics Standard statistics functions such as Mean, SUM, Standard Deviation, and Regression AAA-size Battery Non Graphing Size of case / Total weight Dimensions (D W H) : 161.57713.8mm Weight : 105g Retail Box (Packaging) Not Included "