Feature: 2.4GHzSS (Spread range) radio interaction system Model memory for 40 models Menu Selection Brake blending for large vehicles 4WS Mixes Anti-skid stopping system Throttle acceleration Throttle rate Steering speed Racing timer Digital trim Function choose trim/dial function Function select switch function ESC Link function Trigger position is changed Tension modification function Mechanical ATL Adjustment Digital switch Transmitter: Transmitting frequency: 2.4GHz Band Power requirement: (Dry mobile battery pack) Penlight x 4 (6v) Present drain: 250mA or less Transmission antenna: 1/2 di-pole Receiver:R2104GF x2