Review title is Disappointed-I got a lemon :( [SEP] Opened it and set it up and it has basically zero power. (Thought maybe it needed charged or something before using, but still not working any better after leaving it plugged in for a bit. And besides, the description specifically states it doesn’t require charging!) Assuming this is not the way it’s supposed to be based on all the good reviews?!? The speed adjuster has one speed-ridiculously slow. Regardless of what direction and what speed, it’s moving slower than I could with my hand....so much slower. It’s not even moving fast enough to make a mark in my nail polish removal. Bummed because the reviews sounded great for this despite the cheaper price. :(  Guess I got a lemon!? Will go back to using my older 20000rpm file until I return this one and find a better replacement !