Compared with the first bad buy from Maniquick (the unit cost less than half) I am very pleasantly surprised. Here probably uses the old adage: "Wat nix kost`dat is also nothing" This slightly more expensive unit is actually everything possible what the manufacturer promises. Grinding Even when the cornea, the motor does not stop, as in my first unit. One must rather be careful that you take away too much. But I like to do without the battery, In addition, the spiral connecting cable is dimensioned long enough. The multi-stage speed control and the forward and reverse revs function properly. The accessories are sufficient for most applications, the storage box is very convenient and everything is easy to clean. Anyone who wants to edit his cornea, or want to grind his toenails thin, is well advised with this device! We can only hope that it also keeps long ;-)