EIS insect sting killer As a country doctor, surgeon and emergency doctor are just now in July / August insect bites my daily bread. I bought many years one of the first of these devices before. Product descriptions to explain the application and mode of operation, I can save as detailed explanations are available on the screen here (just scroll down). There are now a number of mature and of good equipment, partly with automatic shutdown, if someone thinks a lot and help a lot. But too much of a good thing causes burns. The top models move in the price zone of 30, -. Now I have the above-mentioned device is found, which I consider the price-performance ratio for unbeatable and bought first 5 pieces. Price 9.95, rugged, pocket-sized and easy to use. However, without shutdown; you have to just take it on and off from the skin when the heat is no longer tolerable. Previous self-experiments and tests at the family showed impeccable function and effectiveness. Works with 9V! There is real power in it!