Indoor air can be 70 times more polluted than the outdoor environment, and 90% of cold and flu germs are spread indoors. Utilizing UV-A, UV-B and UV-C the same technology already proven effective in hospitals and water treatment plants, surfaces become virtually germ-free after a quick 10-second sweep. The Nano-UV disinfector Light Scanner has been laboratory tested and proven safe and effective for home, office and travel use. Lightweight and compact cell-phone size for easy-carry and availability. Operates on 2 AAA batteries (included). UV bulb lasts 4,000 hours.