High performance microprocessor brings out the best compatibility with all kinds of motors and the highest driving efficiency. Motor maximum speed can reach 210000 RPM (2-level motor) 70000 RPM (6-level motor) 35000 RPM (12-level motor). Wide-open heat-sink design to get the best heat dissipation effect. With 3 types of start mode:Normal / Soft / Very-Soft compatible with aircraft and helicopter. Smooth linear quick and precise throttle response. The output voltage of the built-in BEC is switchable by user programming (5.25V or 6.0V). Multiple protection features:Low-voltage cut-off protection / Over-heat protection / Throttle signal loss protection Perfect governor mode for helicopter. The firmware of the ESC can be updated through the USB adapter on the Professional LCD Program Box. User programmable. Several kinds of program methods are supported:transmitter digital LED program card advanced professional LCD program box PC software. Very easy to program the ESC at home or at the flying field.