Airtronics 90490 MT-4S Super 2.4GHz FH4T 4-Channel Telemetry-Capable Radio System 4-Channel 2.4GHz FH4T Digital High-Response Telemetry System with Advanced Programming Backlit LCD Screen for Easy Viewing of Programming and Telemetry in All Types of Conditions High-Power FH4T Technology Provides the Best Reception and Connectivity 4-Cell Dry Battery Holder Also Accepts Optional NiCd/NiMH or 2S LiPo/LiFe Battery Packs Includes RX-472 2.4GHz FH4T Super Response Receiver w/Sanwa Synchronized Link Support