ETRONIX PULSE EX4S 4CH 2.4GHZ FHSS STICK RADIO SYSTEM Ideal radio set for RC car use such as Tamiya model kits. Also great for RC boats. You can use this as a standard 2 channel set on the stick controls, whilst having 2 extra channels on the top of the transmitters (2 x ON/OFF switches) for lights, sound units etc. The left throttle stick returns to the centre/neutral position when you let go of it. Features 4-Channel Easy to use Control for Basic Surface Models Spread Spectrum 2.4ghz FHSS Mode Digital Steering and Throttle Trim Adjustments Steering Dual Rate D/R Adjustment Throttle Dual Rate D/R Adjustment 3 channel Toggle Switch 4 channel 3-Position Toggle Switch Servo Reversing Failsafe Function Charging Jack Port Plug in Battery Box 200m Surface Range Box contents: 1 x EX4s Radio Set 1 x EX4s Receiver 1 x Instruction Manual Needed To Complete? 4 x AA Batteries for handset