Blade mSR BNF Key Features Perfect for anyone who has flown a Blade CX3 or mCX Unique rotor head design provides nimble response plus positive stability Includes TWO flight batteries for more flying time Includes 4-Port charger that charges four batteries at once, plus AC adapter Bind-N-FlyTM compatible with all aircraft transmitters and modules equipped with SpektrumTM DSM2TM technology Factory-installed 5-in-1 control unit that combines( DSM2 )receiver, motor ESCs, mixer, gyro and servos Incredibly durable and weighs less than one ounce 100% factory-assembled, test-flown and ready-to-fly Full line of replacement and option parts available Overview Weighing in at under one ounce, the nimble Blade® mSR Bind-N-Fly takes ultra-micro helicopter performance to the next level and it comes from the factory completely assembled and flight tested. Its unique Bell-Hiller rotor head design provides the kind of speed and agility you would expect of a single-rotor heli but maintains a measure of positive stability similar to a co-axial heli. This blend of agility and stability makes it the ideal next step for someone moving up from a coaxial heli, such as the Blade CX3 or Blade mCX. For single-rotor ultra-micro heli excitement you can fly almost anywhere, the Blade mSR simply can`t be beat. Specs Type:Ultra Micro Single Rotor Helicopter/Hubschrauber Main Rotor Diameter:7.0 in (180mm) Length:7.5 in (190mm) Motor Size:Coreless/Micro coreless Kit/ARF/RTF:RTF Experience Level:Intermediate Recommended Environment:Indoor/Outdoor Assembly Time:Less than 1 Hour Is Assembly Required:No Needed to Complete No additional equipment other than your favorite( DSM2 )Compatible Aircraft Transmitter is required to complete your Blade mSR BNF. If you choose to make your Celectra 4-port charger portable, you may install (4) optional D-size Alkaline Batteries.