Review on Portable UV LED Nail Lamp - Manicure Kit with Timer, Sensor, LCD Display - USB Design for Fast Nail Polish Drying - Ideal for UV Resin and Gel Polishes by Cheryl Guzman

I used this to cure UV resin. It has an auto-off feature after a set time, so it's theoretically impossible to leave it on for too long and cause tanning. Within 90 minutes of occasional use (applying a small amount of curing resin, removing, adding something, reinserting, etc.) I'd say I had to unplug and plug it back in to reset it. 30 times. That didn't always work either. Sometimes I had to try to turn it off three or four times before it woke up again. I have not abused this machine. I used it sparingly as intended, misuse should not theoretically be possible due to the motion sensor and the time limit. I also think it's bad that a USB adapter is required for the connection at all. I have? Of course. But I find it ridiculous to sell a product that a person can't plug in unless you read that aspect of the specs carefully. In short: don't buy this. Waste of money and very inconvenient to use. If I could give 0 stars I would. Very disappointed.