RadioLink RC3S 2.4G 4ch Transmitter TX Receiver for RC Car Boat Truck Radio RadioLink RC3S 2.4G 4CH RC System Transmitter w/ R4EH-G Receiver for RC Car Boat RadioLink RC3S 2.4G 4ch Transmitter Receiver R4EH for RC Car Boat Radio RadioLink RC3S 2.4G 4CH RC System Transmitter with R4EH-G Receiver for RC Car Boat Featuer: 100% brand new and high quality RadioLink RC3S 2.4G 4ch Transmitter TX Receiver for RC Car Boat Truck Radio Both English version menu and Chinese version menu are availablewhich is convenient for Chinese and English-speaking players to personalize function menu 2.4GHz FHSS system LCD screen 10-model memory Channel 4 Programmable mixing Servo reversing, sub-trims & EPA (all three channels) Low-Battery Warning : battery light flashes when voltage drops to unsafe levels. Steering Dual Rates :allows you to adjust steering rates while you're driving. Steering operation curve adjustment and Throttle curve adjustment adjustment shows in diagram simultaneously. With MODEL, EPA, STEXP, STSPD, THEXP, THSPD, A.B.S, ACCEL, IDLUP, SUBTR,REV, D/R, ATL, PMIX, CH3, RESET functions Specifications: Size: 213*117*115.5(mm) Antenna length: 21mm Net Weight: 420g Channel number: 4 channels LCD: 128*64 lattice (with backlight) Power standard: 6VDC (1.5AA*4) (Not included) RF power: less than 10dbm Power extending: JST port 2S~3S LiPo/LiFePo battery Modulation: FHSS Low voltage alert: Yes (lower than 4.6V) Data resolution: 2048 Frequency: 2.4GHz RF range: 300meters on ground Package includes: 1 x Radiolink RC3S Transmitter 1 x R4EH-H Receiver 1 x Chinese manual 1 x English manual