[Used For] GA-4H-TX RC Transmitter perfect used for RC Car Boat Tank , 2.4GHz Frequency 4CH channel. Stable control your 200-300m, make good works and when it out of control. [Multi-suitable] with a variety of vehicles, suitable for RC , RC boats and RC tanks. [4Channels]Each of the 4 channels can be set respectively, supporting mixed control of 1 and 2 channels. [2.4G Technology]2.4ghz wireless controller, FHSS 67 channels frequency-hopping spread spectrum, highly resistant to anti-jamming. With brake and fail safe, out of control protection function. Colour: black Material: composite material Package Contents: 1 * Transmitter 1 * Receiver 1 * English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.