It has been used for 3 months. Initially, I was very skeptical about its efficiency. The box contains a radiation exposure card (measuring the amount of radiation it receives) which shows a very low dose when placed in front of the machine. However, it has stopped mold growth in several areas of the house, so I can't criticize it. The battery is more than enough and it doesn't lose its charge if left unused in its box. As for its construction, it didn't present any flaws. Where I would like improvement is in its sterilization speed. I believe that if it were more powerful, I could reduce the application time. On the other hand, it might be more dangerous for the user.

Unlike many others similar, which are supposed to have UV lamps, this one actually does.
Convenient for small and medium-sized surfaces/objects.
Positive that it stops on its own after 10 minutes.