The FS-G4P 4 channel transmitter uses Flysky’s latest in-house developed 2.4GHz ANT digital auto RF link channel switching protocol complimented with a slick race car design exterior. It also features a rare Beginner Mode for users who are new to the hobby and/or running entry level RTR vehicles. # 4 Channels # ANT Protocol # High Performance # Beginner Mode Product Model: FS-G4P Receiver: FS-R4P Channels: 4 Model: car, boat Wireless frequency: 2.4G Transmission power: <20 dBm Wireless protocol: ANT Range: 100 ～ 300m (ground) Channel resolution: 1024 Battery: 1.5AA * 4 Charging port: None Low voltage alarm: ＜ 4.2V Antenna type: built-in single antenna Data port: None Temperature range: 0 ℃ — + 60 ℃ Humidity range: 20% -95% Online update: No Color: Black Dimensions: 160*193*97mm Weight: 220g Certification: CE, FCC ID: N4ZG4P00 !! All RC products sold without warranty, our store will completely test on every model before shipment and assure our buyer receive the items in good condition !!