The UV Cell Phone Sanitizer was designed to eliminate up to 99.9% of germs and bacteria on your cell phone, and other small electronic devices. Germicidal UV light - the same technology used in hospitals - eliminates strep, e.coli, salmonella and strep. The case accommodates most flat devices including Cell phones, Smartphones, PDA's as well as other small devices like Earbuds, MP3 players, and Bluetooth headsets. The sanitizing process automatically begins when the device is placed inside the sanitizing chamber and the lid is closed. You'll know the sanitizer is working when you see the blue-violet strip pulsing on the front of the unit. In less than 5 minutes the UV light will automatically shut off and your device is fully sanitized.