This is the Hitec Aurora 9 2.4GHz Aircraft 9 Channel Radio System with the Optima 9 2.4GHz Receiver and four HS-5485HB Servos. FEATURES: AFHSS (Adaptive Frequency Hopping Spread Spectrum) 2.4GHz/PPM/PCM compatible Ideal for airplanes, sailpanes and helis Standard programming features include 9 Assignable Control Channels, 3 Model Types (ACRO/GLID/HELI) Programming, 30 Model Memories, Servo Reverse Speed and Monitor, 8 Flight Conditions with 10 Characters and more Advanced ACRO programming includes, 9 Wing Type (6 Main Wings, 3 Flying Wings), 5 Tail Type, Quick Model Options Select, 7 Point Throttle Curve, 3X Gyro Sensitivity, Snap Roll and more Advanced GLIDER programming includes Motor Control, Airbrake, 9 Wing Type, 5 Tail Type, Butterfly, V-Tail, Delta Mix, Launch, Camber Mix, Ailevator, Flap Control, Aileron Diff and more Advanced HELI programming includes 6 Swash Types, 7 Point Throttle and Pitch Curves, Quick Model Options Select, Swash and Rudder to Throttle Mix, Gyro Sensitivity, Fuel Mixture, Throttle Hold and more Programmable standard size digital servos with heavy duty Karbonite gears, extra horns and mounting hardware One year limited warranty beginning at date of purchase INCLUDES: Transmitter Optima 9 Receiver, HRCL9000 Four HS-5485HB Servos, HRCM5485 Transmitter Battery: #54128 8-cell NiMH 7.2V, 1300mAh Receiver Battery: #54121 4-cell NiMH 4.8V, 1300mAh AC Charger: CGS45 NiMH Wall Charger REQUIRES: Programming, charging transmitter and receiver batteries, and installing servos and receiver into model SPECS: Transmitter- Power Supply: 7.2V NiMH battery Current Drain: 300mA HS-5485HB Servos, Speed: 0.20sec/60 degrees at 4.8V Torque: 5.2 kg-cm (72 oz-in) at 4.8V Length: 39.8mm (1.57") Width: 19.8mm (0.78") Height: 38.0mm (1.49") Weight: 45g (1.59oz) Optima 9 Receiver, Size: 1.85 x 1.12 x 0.44" (48 x 28.5 x 15.3mm) Weight: 0.77oz (22g) Operating Voltage: 4.8 - 7.4V from RX battery or ESC power 4.8 - 35V using SPC function Current Drain: 190mA jxs 10/02/09 ir/jxs