You can use it for cars, boats, robots and other wheel or tracked control vehicles. The ergonomically designed Fs-GT2 2.4 GHz 2 channel digital transmitter and receiver radio system comes with a transmitter and a receiver. Technical Features: 1. 2.4Ghz Technology 2. Low Voltage Warning 3. 8 AA batteries required. PROS Fail-proof Reliable cover CONS Not rechargeable