This mower replaces another whose batteries become very low (after several years of loyal service), the biggest difference is the smoothness of operation, the mower slides over the face. The cut is perfectly realized and without tugging the hairs of the beard. Setting the cutting height is very easy and accurate. So item that meets my expectations and I recommend for its excellent price / quality (of course, I can not yet judge the endurance since I only use it for some months).