Calling something a \u201cgadget\u201d may help to differentiate it from another consumer electronics device, but it doesn\u2019t exactly elevate its status as a useful device. But the Ambi powered by Blu*TEC Portable Personal Cooling Device doesn\u2019t care what you call it as long as it\u2019s understood that what it does has value: relieving discomfort and pain that is localized on the body, such as a mosquito bite or having banged the funny bone against a table. Right now it sounds like one of those cold wraps you keep in the freezer and you wouldn\u2019t be completely wrong. However, the Ambi\u2019s electronic nature and physical construction can make it suitable as a comfort against \u201chot flashes\u201d and migraines as well.\r\n\r\nThe\u00a0Ambi powered by Blu*TEC Portable Personal Cooling Device might be considered an \u201celectronic ice cube\u201d as it uses the Peltier effect of thermoelectric cooling, like what NASA used to chill the space shuttle and also found in some portable coolers. Cold therapy has been shown to be effective in situations noted above, although there is no US FDA evaluation nor claims by the company as to its treating, curing or preventing any disease or medical condition. But then an ice cube\/cold wrap doesn\u2019t get a big play in the medical books either \u2014 so okay, now that\u2019s out of the way. One side of the Ambi has the exhaust fan, LED indicators and power switch, the other side the metal plate that cools to 50 degrees F (10 C). It\u2019s this plate that gets pressed against the area to be treated: in the case of \u201chot flashes\u201d and related, the company says to place it against the back of the neck where the thermoreceptors (heat sensors) are most dense. The\u00a0 idea being to cool them off and tell the brain, which manages pain, to discontinue the troubles.\r\n\r\nThe Ambi itself is small enough to fit inside a knapsack or purse, although I imagine it\u2019s more likely to be used in the home. It runs on 4 \u201cAA\u201d batteries, which makes sense since that lets it be portable \u2014 the included AC adapter is a nice addition but working it with a power cord draping down isn\u2019t very sensible. One side has the exhaust fan, LED indicators and power tab, while the other has the metal plate that becomes 50 degrees F (10 F) and is applied against the body. Pushing the power tab to the right turns on a red light and an aprox. 30 second wait time counts down. When the light becomes blue, the Ambi is ready to be used (i.e., applied to the problem area). The cold being generated isn\u2019t so intense as to cause \u201cfreezer burn\u201d either. After a few minutes, it\u2019s time to recharge the plate if more use is desired. How well the Ambi works is a bit tricky to track \u2014 each person is different in how they react and how effective the results are. In my case, I scratched my arm sufficiently enough to be aggravating, and so used the Ambi to cool down the area. I can say that its effectiveness would be good for small bites (that mosquito again) and compared to an ice cube or cold wrap, it\u2019s much more convenient and usable (no water condensation like that from an ice cube to worry about, for one thing). I don\u2019t get night sweats, but a friend\u2019s wife gets migraines and so I gave it to him and asked her to use it the next time it happened. She did, and said that it helped \u2014 she also said that it was a lot better to use compared to a cold wrap. That might seem obvious, but it\u2019s also one of Ambi\u2019s selling points \u2014 there\u2019s none of the fuss or bother that comes from using what\u2019s being kept inside the freezer.\r\n\r\nBottom line: The Ambi powered by Blu*TEC Portable Personal Cooling Device demonstrates that a procedure (applying cold) can be reduced to simplicity through the use of an electronic device. That the device is portable and also designed to work in an efficient manner is all to the better. While the Ambi can\u2019t be endorsed as a medical device legally, there are no negatives to using it for cold therapy. Or any reason a guy can\u2019t find a use for it as well as a gal. Plus the fact that it can help in some cases to alleviate pain makes the cost of $49.99 a pittance to pay.