The Standard 2.4Ghz 3-Channel Receiver for Transmitter with 2.4Ghz Surface Transmitter, very easy to . : Car/Boat Channels: 3ch -GR3E 3CH 2.4GHz Receiver GT2 GT3 GT3B GT3C GR3C RC Car Boat Frequency band: 2.4 GHz AFHDS Modulation: GFSK Sensitivity: 1024 RF. receiver sensitivity: -100dbm : 4.5~6V DC Weight: 5g Antenna Length: About 180mm Colour: black Material: plastic Size WxHxD: 35.5 x 22 x 13mm Suitable for the following transmitters -GT2 -GT2B -GT3B -GT3C HobbyKing GT2 HobbyKing GT3B W5 W6 Package Contents: 1 x -GR3F 2.4GHz Receiver Only the above package content, other products are not included. Note: Light 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.