Flight is smooth on this drone, with an impressive climb and turning rates that meet the demands of even expert fliers. You can count on the stability of the X400W when in windy conditions – the six-axis gyros do a good job maintaining hovering with lateral winds. You can access the FPV stream on your smartphone via a WiFi connection. With the dedicated app, you can activate the camera and record sharp videos and images. It is important to note that the HD 720p camera is primarily for delivering an FPV live stream, rather than shooting pictures and videos. You can also connect this drone with a 3D VR headset if you want to enjoy a 100% immersive FPV flying experience. 

The drones we review are ready-to-fly models, so you can use them right out of the box. In most cases, you'll need to bring your own Android or iOS device to view the camera feed in real-time, but we've reviewed a few models that stream video directly to a remote control. We don't cover racing, industrial, or agricultural aircraft here—our focus is on aircraft intended for aerial imaging and videography.
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The quadcopter is only about 3.5’’ measured diagonally motor to motor making it one of the smallest drones on the market. Even in that small chassis, Cheerson managed to fit a 100mah battery. While that may not sound impressive, it delivers solid flight time, keeping you in the air for somewhere between 4 and 8 minutes depending on how hard you fly it.
The UDI 818A comes ready to go right from the box. The only thing necessary is to charge the battery, which can take up to an hour. While this can be annoying, the wait is worth it, as the 3.7V 500mAh LiPo battery lasts a full two to three minutes longer than Quadcopters like the Syma X5C. Along with that, included in the box are also four backup propellers, a mini screwdriver, battery charger, and USB connector for the attachable camera so that pictures and videos can be saved right on to your computer.

As mentioned above, you will crash, and you certainly don't want to go home empty-handed. Having back-up propellers can make or break your day. Extra batteries are also a must. Current battery chemistry limits flight times to somewhere between 5 and 25 minutes for most amateur drones. Having plenty of charged spares means you can fly longer — though flying for more than 30 minutes straight can be fatiguing.
If you are a beginner just learning to fly with these cheaper drones, take your time to learn the controls by flying in a safe area that is a wide open space, with no wind, and no obstacles. At first, fly low to the ground until you can maneuver your drone correctly. Practice flying on a single battery charge and then let the drone cool down for ten minutes before flying more.