The Z3 fits comfortably in the hand.  Adjusting the blade's cutting axis increases cutting efficiency and also minimizes pain and fatigue.  The forward facing lights help illuminate your work for safety and the removable cutting heads allow for switch out, blade replacement, or deep cleaning.  The scissors begin clipping at a very fast cutting rate with a light press of the actuator button to make trimming a breeze.  This is the tool for discriminating manicurists.  It enables you precise control to speed harvest productivity and provide the high quality yield that you desire.