love love this product [SEP] i purchased this product after severely cutting my heel with one of those blades used to cut the calluses from your feet my husband had warned me of the dangers of using blades and i have cut my feet several times i read many reviews on this product and others before purchasing it came in days and had a charge when it arrived i keep it plugged in so it is ready whenever my husband or i are needing to use it i am very pleased with this product and very happy that i purchased this it works very well and does a great job and i use it at least once a week to keep my feet really soft my husband also uses it about once a week also to keep his feet smooth he was shot in the foot and the bullet fragments are still in his foot and he gets calluses where the fragments are in his foot i also purchased the extra rollers but have not had to change the original one out yet those who complained about this product must not have used it properly when using do not press down thinking that extra pressure will help it is not designed to be used like that just lightly touch the area you want to treat and the file will definitely work well for those who have a lot of hard calluses you might want to either soak your feet first to soften the skin or use it everyday for a couple of days until you get the best results you do not want to over do it because you may cause your feet to be sore i am very happy with my purchase and highly recommend this wonderful gadget to anyone it will definitely save you a lot of money on getting pedicures elsewhere