The term "RTR" refers to any (usually) land or water based RC that is supplied fully assembled with radio and receiver installed, thus making it "Ready to Run". However, simply having "RTR" printed on the box doesn't necessarily mean that everything is included and in most cases, batteries and chargers will be required.
It's important to check if there are any additional items required with the RC in question.
For more information watch our video below to get a more detailed understanding of Ready-To-Run, Rolling Chassis, RC Kits and Almost-Ready-To-Run vehicles.