Using the same technology trusted to sanitize hospital instruments, this pocket-sized device eliminates 99.9% of germs from water or surfaces. Tested by an independent laboratory, the device emits UV-A and UV-C light to penetrate bacterial membranes, destroy their DNA, and kill harmful microorganisms like E. coli, Staphylococcus, and Salmonella. Ideal for rapid, effective disinfection while traveling, the device sanitizes surfaces in 10 seconds and purifies two cups of water in 40 seconds when the wand attachment is inserted into the liquid. The built-in LCD screen counts down the time left until the surface or water is sanitized and displays "OK" when the process is complete. Includes four AAA batteries. 6" L x 2" W x 1 3/4" D. (1 1/3 lbs.)