The TF-45 has the latest Frequency-Hopping Spread Spectrum (FHSS) digital 2.4GHz radio technology from HPI to give you total control in every situation! With favorite features like End Point Adjustment (EPA), 3rd-channel functionality, adjustable failsafe settings with the RF-45 receiver and easily adjusted settings, the TF-45 also now features customizable grips, a more ergonomic shape and drop-down steering wheel with an all-new look!