Stay mobile, continue learning - Transfer class assignments from handheld to computer (PC and Mac). Complete work outside of school using student software. On the desktop at home or a laptop on the bus, at the library, coffee shop wherever. Visualize in full color - Color-code equations, objects, points and lines on the full-color, backlit display. Make faster, stronger connections between equations, graphs and geometric representations on screen. Real-world images - Use digital images or your own photos. Overlay and color-code math and science concepts. Discover real-world connections. Recharge with ease, the TI-Nspire Rechargeable Battery, installed with the handheld, is expected to last up to two weeks of normal use on a single charge. No alkaline batteries needed. The sleek TI-Nspire CX handheld is the thinnest and lightest TI graphing calculator model to date. It"s also the brightest with a high-resolution, full-color display that makes it easy to see every exponent, variable and line. 3D Graphing - Graph and rotate (manually and automatically) 3D functions. Change the wire or surface color of your 3D graph.