About this item Assembled RTF version, with Radiolink AT9 radio set and battery. Each drone has been well-calibrated and pre-flied. ARRIS C250 V2 uses flycolor 4in1 30A s-tower, which greatly reduced the wiring messing. The ARRIS C250 V2 adopts with the latest 5042 propeller, it has bigger windward area, well balance and strengthen root, and the efficiency is 10% higher than normal propeller. With the high performance ARRIS X2205 2300KV brushless motor, the ARRIS C250 has outstanding power. The camera angle is adjustable.