Product features:one-to-one Bluetooth frequency (not affected by remote control of other cars), three-speed speed control, with slow start device. 12V remote control operation Press car power button Press the "speed adjustment button"and"emergency stop button" at the same time for 5 seconds. When the indicator lights up without flashing,the signal is matched successfully Product Name:2.4G frequency Remote Controller and receiver Type:C Colour: black + white Material:plastic Package Contents: 1 x Remote Controller 1 x receiver Only the above package content, other are not included. Note: Light reflection 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.