Genius T835 Mouse - Laser - Wireless - 11 Button(s) - Black - Radio Frequency - USB - 1600 dpi - 8 Way Scroll. If you want more functions and have less to carry, then check out this premium wireless device from Genius the Navigator T835 Laser. It features a presenter, laser mouse and laser beam function, and is the all-in-one super tool for you to carry along with your notebook.