This is the UV sanitizing robot that automatically navigates along countertops, tables, or beds to safely eliminate most germs. Easier to use than a wand, it operates like a robotic vacuum using two UV-C bulbs that emit 253nm wavelength light to irradiate viruses, bacteria and mold on surfaces. About the size of a dessert plate, the robot has 18 sensors in its body that help prevent it from getting stuck, bumping into objects, or falling off countertops or tables. Its built-in rechargeable battery provides up to two hours of power from a 2 1/2-hour charge via USB. UV bulbs rated for 10,000 hours. 6 1/4" Diameter x 2" H. (14 oz.)