Rugged, professional-grade scientific calculator.Two-line display: Simultaneous display of input and calculation results.Easily handle 1 and 2 variable statistical calculations, three angle modes and scientific/engineering notation mode.Slide open the protective hard case to prevent scratches, bumps and dust.Ideal for high school students, college students and professionals.Calculator only, does not include other accessory demos in the picture!specification:Project Type: Calculatormaterial: plasticSize: 150x75x20mm / 5.9x2.9x0.7inColour: BlackPower supply: 2 button batteries(without battery)Quantity: 1 pieceTransition: 1cm = 10mm = 0.39inchPacking: 1 * calculator Please understand that due to differences in lighting or computer monitors, I cannot guarantee that the photos and actual colors are 100% the same.Due to different measurement methods, there may be a deviation of 1-2cm.with Large Display