6 months & battery won’t charge.
Six months after purchase the battery stopped fully charging it. I used it maybe 4-5 times and now it only works for a minute then the battery dies & I have to recharge it.  ALSO the plastic pieces on the sides of the “grinding wheel” make it so you can’t really use it in the middle of your foot. I used to have one where the entire top was just the file wheel with no plastic guards on the sides. I don’t know how else to explain it but I don’t care for that so I am ordering that kind since this one is broken.
Rating: 3 stars