I use Stoner's Invisible Glass strictly when detailing cars (others or my own). It doesn't streak and applies well. It's alcohol based, so its safe for window tint (unlike ammonia-based products such as Windex). Unlike other Stoner's products, it can be purchased in a traditional spray bottle rather than a pressurized can. Great product!

We bought two of these as Christmas gifts for our son who always has extremely cold hands and likes to do outdoor things in the winter. They were hard to fill and did not heat very warm or warm enough to heat his hands. We were very disappointed and have returned both.

First off, this is an excellent portable TENS device that only uses 2 AAA batteries (incl.) and has 2 electrodes, but if you do some more research you'll realize it is a little high-priced for what you get.