Sharp EL-W535XBSL Engineering/Scientific Calculator with WriteView 4 Line LCD Display Large 16 digit, 4 line LCD display allows for easy viewing of advanced calculations WriteView display technology allows for calucations to appear on screen the same a written or in a textbook 335 Functions, 3 Modes (Normal, Stat and Drill) with 1 and 2 variable statistics 8 Temporary and 4 definable memory buttons Durable, glossy black finish with silver accents and protective case