This is the Futaba R2004GF 2.4GHz FHSS 4-Channel Receiver. FEATURES: For use with the 3PL and 4YF-2.4GHz FHSS transmitters Flexible coaxial antenna that's easy to position inside a model for ideal reception Does not have battery failsafe function One year limited warranty through manufacturer beginning at date of purchase INCLUDES: Futaba R2004GF 2.4GHz FHSS Sport 4-Channel Receiver with instruction sheet REQUIRES: Installing in model and connecting battery and servos Linking to transmitter SPECS: Power Requirement: 4.8V or 7.4V shared with servos Current Drain: 30mA at no signal Size: 1.54 x 1.02 x 0.39" (39 x 26 x 10mm) Weight: 0.49oz (14g) COMMENTS: This receiver does not work with the Futaba FASST system. Use only with the Futaba 4YF 2.4GHz FHSS system. Futaba FASST systems and FHSS systems are not compatible with each other.