Check the listing for details. Blade Nano S3 RTF BLH013000. Color: Blue, Condition: New. Listed at 149.99 USD. Blade Nano S3 RTF RC Helicopter Overview 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 comes totally re-tuned from the ground up improving AS3X® stability, an improved SAFE® mode with angle demand, and an improved panic recovery. On top of that, the SAFE Z altitude control utilizes the on-board accelerometer to keep the heli at a consistent altitude. With its vertically.