This is the Futaba 4YF 4-Channel FM Radio System with the R168DF Receiver and four S3004 Ball Bearing Servos. FEATURES: All-channel servo reversing for more installation options Transmitter and receiver NiCds made from genuine Sanyo cells can be recharged simultaneously with the included 50mA overnight charger Power and servo reversing switches are located down and out of the way for convenience and to avoid accidental changes The battery meter features one Green and one Red LED for easy-to-read GO/NO GO status. Ball bearing servos for smoother operation than standard servos Spring loaded trainer toggle switch for instant "OFF" Gimbals have knurled tops for a better "feel" on the sticks and to prevent finger slippage. One year limited warranty INCLUDES: One Futaba 4YF 4-channel FM radio system with NiCd batteries, 120V AC charger, frequency flags, neck strap, servo tray, switch harness, four S3004 servos, servo mounting hardware, transmitter and receiver crystals and R168DF Receiver REQUIRES: Charging batteries overnight SPECS: Transmitter: Modulation Method: FM (Frequency Modulation) Power Requirement: 9.6V NiCd battery Current Drain: 180mA Trainer Port: Micro R168DF Receiver: (72MHz FUTL0832, 75MHz FUTL0833) Length: 2.2" (55.5mm) Width: 1.1" (28.5mm) Height: .8" (19.8mm) Weight: 1oz (28g) Charger: FBC-8B(4) Input: 120V AC 60Hz 4W Output: Tx 9.6V DC 50mA Rx 4.8V DC 50mA Tx battery: 600mAh (FUTM1440) Rx battery: 600mAh (FUTM1295) Bands: 72,75MHz S3004 Ball Bearing Servo FUTM0004 Speed: .23 sec/60° @ 4.8V .19 sec/60° @ 6V Torque: 44.3 oz-in (3.2 kg-cm) at 4.8V 56.8 oz-in (4.1 kg-cm) at 6V Length: 1.59" (40.4mm) Width: .78" (19.8mm) Height: 1.42" (36mm) Weight: 1.30oz (38g) Connector: "J" type with approx. 5" wire jxs 6/17/03 ir/jxs