This pocket-sized device is a chemical-free, easy way to stop the pain and irritation of bug bites and stings.. It's patented technology includes a tiny integrated microprocessor, which heats the skin to around 48 degrees Celsius for 3-5 seconds (3 seconds for children and 6 seconds for adults). With 3 temperature settings and 2 program settings, this device is perfect for regular or sensitive skin. The Medescan No Itch Bite Healer device is suitable for the whole family (3+ years), so everyone can enjoy relief from those pesky insects.