Most of the models we sell come with a little plug in them called a frequency crystal. To change the frequency you put a different plug into the controller and receiver. When someone orders 2 models we automatically send different frequencies. All of the proper rc models we sell have changeable crystals. Some of the rc toys though do not such as the rc robots.
Modified on: Fri, 4 Jul, 2014 at 6:30 AM
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