The Blade 400 3D (EFLH1400) is designed to give intermediate to advanced heli pilots a ready-to-fly experience like no other. It comes 100% factory built and flight tested so you can get flying right away. There is nothing left to assemble or set up. The Blade 400 3D is ready for hovering and 3D aerobatics as soon as you finish charging the battery. And you can fly it just about anywhere, anytime thanks to the included Spektrum 2.4GHz DX6i radio system that avoids interference with other RC users, even those on other 2.4GHz systems. You also get the benefit of the DX6i’s advanced DSM2 protocol that provides the kind of locked-in, solid response that will let you fly even the most demanding 3D maneuvers with absolute precision.
For more information, check this out.