AOS 5 EVO O3 HD 6S FPV Quadcopter BNFKey Highlights: Spectacular Vision : Thanks to the DJI O3 HD Air Unit, experience low latency digital transmission as if you were flying first class, but without the pesky peanuts. Battery Buddy : Secured Battery Plug with Anti Spark Filter, because the only sparks should be between you and the skies. Strong Arm Tactics : Topology optimized truss design arms. We've got the biceps to prove it. Durable Chassis : Robust 2. 5mm top and bottom plates