Futaba 4EX FM 4-Channel Stick Radio w/ R136F x 1 w/ S3003 x 3 For 6 PCs This is the Futaba 4EX 4-Channel FM Stick Radio System. with S3003 standard size, ball bearing Servos and the R136F standard size Receiver. FEATURES: Four model memory. Exponential for ailerons, elevator and rudder. 40-segment LCD screen. Servo reversing. Analog trims with trim memory. End Point Adjustment (EPA) on all 4 channels. Data reset Trainer system Low battery alarm Trainer box capable (trainer cord sold separately, see COMMENTS). INCLUDES: One Futaba 4EX Transmitter with transmitter and receiver crystals R136F Receiver S3003 Servos x 3 One Bag Servo Mounting Hardware: FUTM3551 SWH-13 Switch Harness: FUTM4370 ANT-5 Transmitter Antenna: FUTM5040 Transmitter strap: FUTM5690 Servo Extension: FUTM3910 Servo Tray Freq Flag SPECS: 4EX Transmitter: Modulation: FM (Frequency Modulation) Power Supply: 9.6V NT8S600B NiCd battery or 12V alkaline battery Current Drain: 250mA R136F Receiver: Size: 1.5" x 1.0" x 0.6" (36 x 24x 14.4mm) Weight 0.47 oz. (13.5 g) MHz: 40 / 72MHz S3003 Servo: Torque: 44 oz-in (3.2 kg-cm) @ 4.8V / 57 oz-in (4.1 kg-cm) @ 6V Speed: 0.23 sec/60?@ 4.8V ~ 0.19 sec/60?@ 6V Dimensions: 1.6" x 0.8 x 1.4" (40 x 20 x 36mm) w/o output shaft Weight: 1.3oz (37g)