They do what they have to do. These are good value for money as they last a long time. However, they are not UL listed, so they are cheap. Cheap isn't always better. If you plug them into a socket, they generate very strong electromagnetic fields that are harmful to your health! I don't think anyone should go for the cheaper option with foreign cheap electronics. There's a reason UL products cost more, because they undergo rigorous safety testing. It's not like this. They last a long time and "work" but are not UL listed. They are also unsafe in US outlets. They generate BASIC electromagnetic fields! Unsafe and harmful!
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