QWinOut Flysky FS-IT4S 2.4GHz 4CH AFHDS 2 RC Boat Car Radio System Transmitter with Touch Screen FS iT4S Better Than iT4 i4 Come with 2 Batteries With 2 Batteries, 2.4055ghz To 2.475ghz Wide Frequency Band and 140 Frequency Point Omnidirectional High Gain Antenna, Cover All The Frequncey Band To Improve Sensibility of Sendering and Receivering Data Exclusive ID Identification, Improve Stability of This Automatic Frequency Hopping Digital System Lower Energy Comsumption Electronic Components,High Sensitivity Chip and Internal Transmission Increase The Operating Time Real Time Data Display of Model, Such as Voltadge, Speed and Temperature,Etc.