Water-proof and dust-proof for all-weather races; (Note: uninstall the cooling fan using this ESC in water; Clean and dry it after the use for avoiding the connectors .) External programming port, easy to connect to the Card when setting the ESC; Proportional brake with 4 steps of maximum brake force adjustment and 8 steps of drag brake force adjustment; 9 steps of acceleration(punch) adjustment from "soft" to " aggressive" to fit for different kinds of models, tires and tracks; Multiple protections: Low voltage cut-off protection / Over-heat protection / Throttle signal loss protection / Motor lock-up protection; One-button(the "SET" button on the ESC) to set the ESC, and easy to reset all parameters to the default ; Compatible with the device-the portable Digital LED Card, especially convenient for outdoor use. Instuctions 1. Connect BEC wires with the receiver 2. Connect motor wires with ESC 3. Turn on the transmitter 4. Connect battery pack with ESC then switch on the ESC. 5. When the connection of motor and battery is finished, the motor emits"Beep-Beep"tone. 6. When the throttle stick is in the neutral position, the motor re-emits "Beep-Beep"tone. 7. The ESC is workable. colour: black Material: ABS size: 8.1x5.5x1.2cm Package Contents: 1*RC Card Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.