Note the following prior to making a purchase 1. For Spektrum transmitter user: You will need an DSMX satellite with 2 antennas come out (SKU: SPM9645) for binding with your radio. Make sure your radio Frame Rate is set as 11ms before you binding. If you use the DSMX with 1 antennas come out (SKU: SPM9745), it will not bind. We hope Align will release an update in the future to allow it to work with the newer SPM9745, but until then the older SPM9645 must be used 2. For Futaba transmitter user: Before you binding your radio to the helicopter, please go to setting and update receiver boards. Make sure your radio protocol set as S-FHSS. 3. For the JR sat (JR DMSS RA 01L), you have to rewire the cable to match with the sat output from the board. If you still can't bind with the T15, you can bind it from the separate receiver before you plug it in the T15. Standard equipment T15 Main Blades x 1 set 15M Main Motor(1500KV/2405) x 1 15MT Tail Motor(8000KV/1103) x 1 T15 Digital Servo x 2 T15T Digital Servo x 1 T15 Tail Blades x 1 set Remote Extension x 1 Li-Po Battery 2S 360mAh 50C(45x20x13.5mm) x 1 T15 Specification Length: 272mm Height: 85mm Main Blade Length: 120mm Main Rotor Diameter: 280mm Tail Rotor Diameter: 51mm Full Weight(Without Battery): about 100g Accessories T15 Kit x 1 T15 Main Blades x 1 set T15 Tail Blades x 1 set 15M Main Motor(1500KV/2405) x 1 15MT Tail Motor(8000KV/1103) x 1 T15 Digital Servo x 2 T15T Digital Servo x 1 Remote Extension x 1 Li-Po Battery 2S 360mAh 50C(45x20x13.5mm) x 1 T15 Carry Box x 1 1.3mm Hexagon screw driver(Blue/8.2g) x 1 0.9mm Hexagon screw driver(Red/8g) x 1 Feathering Shaft Wrench x 1 Parts box x 1 Self-provided Equipment ALIGN T6 or Futaba S-FHSS 2.4G Transmitter. For the use of JR and Spektrum system, require JR DSM2/DMSS, Spektrum DSM2/DSMX 2.4GHz Transmitter and Satellite. Align A10, for use with this you will also need the Receiver HEG00003T Battery Charger.