This is the 2.4GHz FHSS Futaba 4YF 4-Channel Radio System with the R2004GF Receiver. Transmitter and Receiver only, Servos not included FEATURES: FHSS (Frequency Hopping Spread Spectrum) eliminates frequency pins and signal interference-pushbutton transmitter/receiver linking with no binding plugs R2004GF receiver has coaxial antenna that can be positioned inside model for optimum reception Power Down Mode - reduces RF power for 90 seconds, simplifying ground checks for interference All-channel servo reversing for more installation options Power and servo reversing switches are located down and out of the way for convenience and to avoid accidental changes Battery meter features one Green and one Red LED for easy-to-read GO/NO GO status, does not have battery failsafe function Elevon mixing Gimbals have knurled tops for a better "feel" on the sticks and to prevent finger slippage One year limited warranty through Hobby Services beginning at date of purchase INCLUDES: 2.4GHz FHSS Futaba 4YF 4-Channel Transmitter R2004GF Receiver, FUTL7617 On/Off Switch Harness Neck Strap Instruction Manual REQUIRES: AA Batteries: Four for transmitter Receiver battery pack depending on application SPECS: Transmitter; Transmitting Frequency: 2.4GHz band Power Requirement: Four AA cells Current Drain: 90mA Trainer Port: Micro Receiver; Power Requirement: 4.8 - 6V shared with servo Current Drain: 30mA at no signal Size: 1.54 x 1.02 x 0.39" (39 x 26 x 10mm) Weight: 0.49oz (14g) COMMENTS: 2.4GHz FHSS is not compatible with FASST systems, and the R2004GF receiver is compatible only with electronics created specifically for 2.4GHz FHSS systems. Can be used in a Trainer configuration as the Student only. ***** This does require a special Mini Charge Plug if you are going going to use NiCd batteries. You can purchase this from your local Great Planes authorized hobby store. Or directly through Futaba Services by calling 217-398-8970 opt 2. The part numbers and prices that you require are; HSP29615 FUTABA MINI CHARGE PLUG W/LEAD jxs 01/07/10 JMLM 3/27/10 updated jpg 5/4/11