Color Screen. The screen size is 320 x 240 pixels (3.5 inches diagonal) and the screen resolution is 125 DPI; 16-bit color\nRechargeable battery included. Can last up to two weeks on a single charge\nHandheld-Software Bundle. Includes the TI-Inspire CX Student Software delivering enhanced graphing capabilities and other functionality.\nThin Design and lightweight with easy touchpad navigation.Quick alpha keys\nSix different graph styles and 15 colors to select from for differentiating the look of each graph drawn