the cutting function is generally just about ok. But the turbo button is completely superfluous. I notice no difference to normal operation. In addition, the hair falls in the Shorthair essay not of itself out (With my old Haarschenider that was at the same cutting length so). So I have every two orbits the top Remove to remove the hair. Otherwise it cuts no longer good. This takes the haircutting with this device now 3 times as long.