This lightweight￡? easy-to-fly￡? nano-sized remote control quadcopter is one of the smallest radio controlled￡? full-featured multi-rotor drones in the world. It has all the features you need because it is optimized for fun. The tiny controller uses the same lithium polymer pack as the flight battery. That means you get almost twice the flight time￡? because you can swap the flight battery with the transmitter battery. Buzz this safe and tiny drone around the yard or into the wild￡? and then easily perform 360-degree rolls in any direction. The U39 is an exciting quadcopter to see in action and even more exciting to fly.<br> <br> Features:<br> Mini size￡? portable and suitable for indoor flying.<br> 2.4GHz high performance quadcopter￡? operating without any delay￡? single drone with single frequency￡? multiplayer is available.<br> It adopts 4 motors as the driving force￡? fly steadily and can realize all the flight function easily.<br> Modular design makes it easy to install and repair.<br> 4 -CH function provides stable flying and easy operation. Beginner and expert modes.<br> Completely assembled airframe￡? high capacity Lipo battery enable longer and more efficiently flight.<br> Equipped with UDIR/C USB charger￡? which has various kinds of charging ways and makes charging become more convenient.<br> 6 axis gyro equipped with the latest 6-axis flight control systems.<br> Colorful flashing lights - enjoy this quadcopter both during the day and at night!<br> <br> Specification:<br> Brand: UDI<br> Model: U839<br> Remote Control: 2.4GHz Wireless Remote Control<br> Channel: 4-Channels<br> Age: Above 14 years old<br> Built-in Gyro: Yes<br> Quadcopter Size: 89 * 89 * 29mm / 3.5 * 3.5 * 1.1in<br> Quadcopter Weight: 20g / 0.7oz<br> Quadcopter's battery (built-in): 3.7V/150mAh<br> Battery Size: 25 * 17 * 8mm / 1.0 * 0.7 * 0.3in<br> Charging time: about 40 minutes<br> Flight time: about 4-5 minutes<br> Control distance: about 30 Meters<br> Transmitter battery: 3.7V 150mAh LiPo (included)<br> Transmitter Mode: Mode 2 (left stick throttle)<br> <br> Caution:<br> Don't over-charge￡? or over-discharge batteries.<br> Don't put it in the high temperature condition.<br> Don't throw it into fire.<br> Don't throw it into water.<br> <br> Package information:<br> Package size: 20 * 14 * 8cm / 7.9 * 5.5 * 3.1in<br> Package weight: 179g / 6.3oz<br> General gift box<br> <br> Package list:<br> 1 * UDI U839 quadcopter<br> 1 * Transmitter (mode 2￡? left hand throttle)<br> 2 * Pair spare propeller<br> 2 * 3.7V 150mAh LiPo Battery<br> 1 * USB charger connected cable<br> 1 * U-type spanner<br> 1 * English Manual<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>