This is the Futaba R6106HF 2.4GHz FASST 6-Channel Park Flyer Receiver. FEATURES: Ideal for park flyers, indoor models and helis up to 19.7" (500mm) in length and 39.4" (1000mm) main rotor diameter Use with any servo in normal mode or digital servos in high speed mode End pin design for easy servo connections Easy Link ensures receiver recognizes and responds only to transmitter it is linked to One year limited warranty through manufacturer INCLUDES: Futaba R6106HF 2.4GHz FASST 6-Channel Park Flyer Receiver REQUIRES: Linking to transmitter, installing in model and connecting servos and battery SPECS: Size: 0.85 x 1.53 x 0.48" (21 x 39 x 12mm) Weight: 0.24 oz (6.7g) Voltage Range: 4.8 - 7.4V jxs 8/27/09 ir/jxs