Blade 150 S Smart BNF Basic Electric Helicopter w/AS3X & SAFE TechnologyThe Blade 150 S Electric Helicopter is a solid choice for pilots looking for a step up from entry level radio control helicopters such as co axial, or fixed pitch designs. The 150 S is pre assembled, and just needs to be bound to a Spektrum RC compatible DSM2 or DSMX radio system. Thanks to the collective pitch design, the 150 S is capable of any type of aerobatic 3D flight you can throw at it, with ease. Built in Spektrum SAFE technology will allow