Our new and improved moisture guard uses low heat - 109 degrees Fahrenheit. Safety rated (CE mark) to ensure the maximum drying efficiency of your devices. The timer can be set to 3 or 6 hours. A safety switch turns off the UV light if the lid is opened during use. Safe / Low voltage uses USB-Mini 5V power supply included. Small size for easy transport - Takes up less desk / counter space. Attractive, easy to clean, creating a safer environment, reducing likelihood of ear infections.