This is the Futaba R614FS 2.4GHz FASST 4-Channel Receiver and is intended for use with the Futaba 4PK and 4PKS Surface Radio Systems.
Features:
Futaba's FASST (Futaba Advanced Spread Spectrum Technology) shifts very quickly virtually eliminating signal conficts and interruptions unlike other 2.4GHz systems that only stay on one or two frequencies. Small and lightweight
For surface use only
One year limited warranty through Hobby Services beginning at date of purchase