A quality replacement kit for any 2.4ghz frequency model. Batteries not included. 8 x AA required for RC. Features battery level indicator (Full or Low LEDs). RC Features: Throttle and servo trim functions and reverse switches. Power level indicator. Preinstalled crystals (random numbers, picture for example only). Receiver is 35mm long x 26mm wide by 14mm high (23mm high + crystal). Receiver can be used with an ESC if using an ESC their is no need for a separate battery input for the receiver. Works both with Futaba JR and Hitec servos. Also Included: Battery Holder to fit receiver directly (switch / 4 AA batteries not included). 2 x 3kg servos included with servo horns and servo horn screws only: Long 40mm x Wide 19mm x High 37mm. Measurements exclude the 3mm cog and 8mm fixing ledge.