Texas Instruments TI-34 II TK Calculator Teacher Kit High dynamic contrast ratio Fast response time Height adjustable stand MagicEco, MagicReturn &amp; MagicAngle TechnologySpecificationsB1940W Size - 19 Viewable Area - 19 Contrast Ratio - DC 70000 - 1(1000 - 1) (Typ.) Response Time - 5ms Brightness - 300 cd/m Display Resolution - 1440*900 Viewing Angle - 170 /160 (CR&gt;10) Input - Analog RGB, DVI-D Bezel Color - Black Pixel Pitch - 0.285mm Warranty - 3 Years (Parts, Labor) Special Features - MagicBright3, MagicEco, MagicAngle, MagicReturn, Off timer, Image Size Color Effect, Customized key, Windows 7, DVI with HDCP, 100