This is the Futaba T-FHSS 4GRS 2.4GHz 2-Stick 4-Channel Radio with the R304SB 4-Channel Telemetry Receiver. Servos Not Included FEATURES Ideal for crawlers, scale racers, competition boaters and racers Dual ESC mixing for locking diffs, four wheel steering and independent brake mixing are ideal for extreme off-roading External voltage, temperature, and RPM display (sensors not included and must be purchased separately) Gyro mixing, and programmable mixing S.Bus2 MC link function 40 model memory with 10 character model naming Anti-skid braking system (ABS) Throttle speed, cut, acceleration, EXP, and neutral selection (5:5/7:3) Jog dial button layout for easy menu navigation Fail safe on all channels Steering speed and EXP Dual rate, idle up and EPA (End Point Adjustment) Function select dial/switch Data transfer Timer (up/down/lap) Throttle and steering stick tension and angle adjustments Ball bearing equipped throttle and steering sticks One year limited warranty though Hobby Services beginning at date of purchase INCLUDES 4GRS Transmitter R304SB 4-Channel Telemetry Receiver, FUTL7680 On/Off Switch Harness REQUIREMENTS AA Batteries: Four for transmitter Servos of modeler's choice SPECIFICATIONS Transmitter; Power Requirement: Four AA dry cell batteries (6V) Current Drain: 150mA or less Transmission Antenna: 1/2 di-pole Receiver; Power Requirement: 4.8 - 7.4V battery (dry cells cannot be used) Receiving Frequency: 2.4GHz System: T-FHSS (auto detection) with SBUS2 port Dimensions: 1.38 x 0.91 x 0.33" (35.1 x 23.2 x 8.5mm) Weight: 0.23oz (6.6g)