Ready to Fly - Horizon Hobby Blade Nano QX RTF Quadcopter With Bonus Extra Battery Bundle Includeds: Complete RTF Package w/Transmitter, Charger, Battery, Fully Assembled Drone + (1) Extra Battery. Small enough to fly in any room or office. Features exclusive SAFE technology with stability and agility modes Tough, lightweight airframe with blade guards Potent brushed motors that provide smooth and powerful lift. 4-in-1 DSMX Receiver/ESCs/mixer/SAFE sensor unit