I purchased this lamp a couple of years ago when I started doing my own nails. Purchased off of Amazon for around $30. This is the best UV lamp I have ever used! I tried a bigger name brand before (DND) and their lamp after turning on three times, still did not dry my nails and it was not cheap. Decided to try this one and have been a happy customer ever since. Only have to cure once. It was a 30 sec and 60 sec option. I tend to use the 60 sec just for extra curing, but 30 seconds does the job. I highly recommend buying this one!