The Standard 2.4Ghz 3-Channel Receiver for Transmitterwith 2.4Ghz Surface Transmitter, very easy to .: Car/BoatChannels: 3ch-GR3E 3CH 2.4GHz Receiver GT2 GT3 GT3B GT3C GR3C RC Car BoatFrequency band: 2.4 GHz AFHDSModulation: GFSKSensitivity: 1024RF. receiver sensitivity: -100dbm: 4.5~6V DCWeight: 5gAntenna Length: About 180mmColour: blackMaterial: plasticSize WxHxD: 35.5 x 22 x 13mmSuitable for the following transmitters-GT2-GT2B-GT3B-GT3CHobbyKing GT2HobbyKing GT3BW5W6Package Contents:1 x -GR3F 2.4GHz ReceiverOnly 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.