I know it could be my fault buying 2 of this product at a time. The radio frequencies are the same hence ending up causing the trouble I was avoiding, buying two of this product. My boys ended up fighting on who first have access to a control.(as a single control controls the two cars) However my review base on the fragile the antenna is. It's a tiny drink straw holding the cable upright. There was no consideration that kids unconsciously pick their toy from the cable hence snapped the antenna the very first day of use.