Turning to the impressive feature of this small battery. It does not have, unlike other batteries with a LED lamp this is a UV lamp. Confident, I know that UV lamps are used to identify tasks. So I switched. And point to a carpet. By my God, I never imagined that tasks remain anchored and it can not be seen with the naked eye. Frankly I was afraid. Anyway, it's nickel to clean a stain that would not see. I feel I will use it the next time I shampoo my carpet or carpet
Beyond simple tasks, it is handy to detect counterfeit notes or identify items that were painted on a board for example or even false papers.