Overview:40.680 M Hz Authentic car styling with injection moulded body, independent suspension system. Pls install the batteries into the car, put 5pcs of AA batteries into the chassis battery box, then close the cover. Put the antenna into the controller socket, open the lid & insert the 9V battery according to its polarity shown below, then close the lid. The batteries are not included. The BMW logo, the BMW wordmark & the BMW model designations are Trademarks of BMW AG & are used under license.CHOKING HAZARD-Small parts. Not for children under 3 years. Specification: Weight Approx:1224g Size Approx:35 x 12 x 10