Features:1.2S-4S Lipo Battery Power Supply.2.Operate current lower than 90mA.3.Distance 260M ground.4.2048 stage resolution.5.Multiple throlttle and servo curve.6.A.B.S Pulse brake.7.Programmable mix control.8.Throttle Accelertation.Specifications:Package size:27 * 21 * 14cm / 10.6 * 8.3 * 5.5inPackage weight: 604g / 1.3lbPackage list:1 * RadioLink RC4G Transmitter1 * R4EH-H Receiver1 * Manual