Secret Features Fully put together, no building required SAFE technology makes helicopter flight more enjoyable Panic healing mode can prevent a crash Fly barless rotor mechanical simplicity Durable building and construction with carbon-fiber elements High-speed coreless primary and tail rotor motors (installed)Sub-micro linear long-throw cyclic servos (installed)E-flite 500mAh ONE 3.7 V 25C Li-Po flight battery and battery charger (consisted of)Multi-function transmitter with Spektrum DSMX technology Needed To Complete Nothing! Everything you require is consisted of in the box. Introduction The original Blade 120 SR heli was specifically designed to supply the inherent stability of a coaxial helicopter and the nimble control of a single-rotor helicopter. Modeled after the popular ultra micro-size Blade mgr. heli, the bigger 120 SR heli was quicker and more powerful so it could be flown outdoors. Now that principle takes a leap forward with simpler mechanics and the superiority of SAFE technology so that pilots master the basics of single-rotor flight more easily. The sub-micro Blade 120 S is an excellent method to finish from coaxial helis and multicolor drones to a single-rotor device. Fixed-pitch, fly barless rotor mechanical simplicity lets you take pleasure in additional speed and dexterity with a design that has a top-level of toughness and effectiveness. Exclusive SAFE technology helps keep you in control by providing the stability you have to establish confidence quickly. Go up to higher levels of flight efficiency easily with the flip of a transmitter switch. Avoid a crash the 2nd you feel disoriented-- just press the Panic Recovery button and SAFE technology locks the 120 S into a familiar level mindset.