[Features] ● The controller is lightweight and compact, weighing only 50g. ●The rotational speed is displayed on a 2-digit digital display. ●The direction of rotation of the handpiece can also be changed. ●The load status is displayed with 6 LEDs. (Load display) ●Maintains rotation speed with appropriate feedback. (Feedback) ●If you do not work for 5 minutes, the power (display) will be turned off to reduce standby power. (Sleep function)