This is an excellent, rechargeable, electric foot file and callus remover by ZoiyTop. Included in the set are the electric foot file with one coarse and one standard roller, one USB charging cable and one cleaning brush. A red LED light will come on while the foot file is charging, and it will turn green after 1.5 to 2 hours when a full charge has been reached. The instructions stated that you should not use the file while it is plugged in, but it is waterproof so it can be used while bathing, and it can be used on both wet and dry feet. I tested it after washing and drying my feet and the foot file did a wonderful job. The callus remover felt strong and easily smoothed out my heels. The cleaning brush allowed me to clean the file quickly as well. I received a discount on this callus remover but was not obligated to anyone and I choose to share my opinion of it on my own free will. While many callus removers I've tried in the past have been weak, this one by ZoiyTop is very strong and definitely worth getting. I highly recommend it to others! #RankBoosterReview #Sponsored #ZoiyTop