While most hobby-grade RCs come with a collapsible metal antenna on the controller (often detachable), some toy-grade RCs may have non-detachable antennas that are simply plain thin wires with a cap (for safety) on the end of the antenna.
Toy-Grade Controllers and Antennas
From Michael James, About.com
Collapsible and plain wire antennas on toy-grade controllers
© M. JamesRadios and Antennas
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