Usage Tips:1. The sinusoid solution makes it more stable than ESC and not easy to burn out. 2. The single driver design is composed of high‑quality chips and electronic components, which can provide excellent and stable performance. 3. The sturdy structure of the motherboard can greatly extend the service life. 4. Low speed and high torques. 5. Two‑way communication, you can check the power of the skateboard through the remote control.Multiple protections, with low‑voltage alarm function, under‑voltage and power‑off protection. Functional product description: 1. Four gears, 1 low speed. 2 medium speed. 3 high speed. 4 player mode 2. electronic brake (the battery be when the brake is sliding downhill. The maximumvalve current is 10A) 3. One key to turn forward/reverse direction 4. Wireless 2.4G remote control transmission control. 20 frequency points. Automatic frequency hopping anti-collision 5. Maximumvalve current 40A 6. Controller features: low Speed and high torques Description of remote control matching: When the host is powered on, the matching remote control button on the motherboard (the button isside to the buzzer) or and hold the power button for 10 seconds. When the red LED is flashing, the host is waiting for remote control pairing, then tap the remote control Hide button (side to the remote control switch on), the main board LED light and the remote control LED light flash at the same time, the remote control is matched successfully. 18.Naught power consumption standby: 10 minutes to enter the standby state. Standby power consumption isnaught Material:composite material colour:As Shown Package Contents: 1 x Motherboard 1 x Motor wire 1 supply cable 1 x Remote control 1 x USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.