Blade Nano S3 RTF Flybarless Electric Helicopter w/SAFE, 2.4GHz Radio, Battery & ChargerOverview The best micro RC collective pitch helicopter gets even better! The Blade Nano S3 heli builds on the widely popular Nano S2 and offers key technology improvements including built in voltage telemetry right to your compatible Spektrum transmitter. 3D aerobatic expertise is at your fingertips with new features that make mastering difficult maneuvers such as flips and inverted flight easier to learn for all skill levels. A new flight controller