This is the 3-Channel HPI TF-40 2.4GHz FHSS Digital Radio System with the RF-40 3-Channel Receiver. No Servos included. FEATURES: Adjustable fail safe applies brakes to protect car in the event of radio glitches, interference, or if vehicle goes out of range Drop-down steering wheel placement for improved comfort Steering and throttle end point adjustment Steering and throttle trim and dual rate adjustment INCLUDES: TF-40 Transmitter RF-40 Receiver, HPIL5383 Receiver Switch Instruction Manual REQUIRES: AA Batteries: Four for transmitter SPECS: Transmitter- Frequency: 2.4GHz Radio Wave Type: FHSS Weight: 14.8oz (420g) Receiver- Frequency: 2.4GHz Size: 1.2 x 0.92 x 0.51" (31.5 x 23.5 x 13mm) Weight: 0.25oz (7.2g) jxs 07/06/12 ir/jxs