With an altitude hold mode, which keeps the drone at a specified altitude, the Yanni Syma can hover, ascend, and descend at the push of a button, making this one of the easier drones to manipulate in the air once you get the hang of it. At the same time, the Yanni does have similar downsides in terms of charging time, flight distance, and flight time. It takes over two hours to charge, can travel to fifty meters away, and its battery can last for up to ten minutes of flying time. Even with all of these faults in mind, it would be hard to do worse, considering all that you get with it. Best recommended for the more serious beginner interested in FPV drone racing. 
It also can’t handle itself outdoors, with the slightest breeze gusting it away (not only that, but because of how small it is, it’s easy to lose line of sight). Charging takes somewhere around 20 minutes with the usb charger, however you’ll need your own usb to wall adapter or a computer handy to plug it in. Unfortunately, unlike some other quacopters on this list, due to the size and engineering of this drone, repairs are extremely difficult, requiring a very tiny screwdriver to open it up, the solder pads for the motors are also tiny. Repairs aren’t impossible, but it is more difficult.
For example, OPTI has a built-in Optiflow Sensor (a downward facing sensor), which functions by picking out the patterns on the ground to ensure that the drone maintains a straight position.  ATTI, conversely, works a bit differently. With the ATTI, the drone employs other techniques apart from the external sensors to keep the drone in the right orientation and altitude. Thus, the drone can hover in place, or drift slightly around with the wind serving as a push. You will also find a GPS in some drones, and they help the drone to maintain coordinated and precise flights and landings.
Most still cameras are 5 megapixels or higher. Therefore, do not be fooled by the claims of HD for a camera when the manufacturer is relying on the resolution for still photos. It is true what they are saying but not the complete story. Having HD resolution for still images does not explain the possibility of also having a lower quality for video-image capture. 
Generally speaking, drones that cost less than $100 bucks aren’t worth your time. They’re flimsy, they lack advanced features, and they’re almost always squirrely as hell in the air. But Tello is different. Despite the fact that it retails for only $99, it boasts a boatload of high-end features and functionality. Under the hood you’ll find a 14-core Intel vision processing chip, flight stabilization tech from DJI, a 5 megapixel camera capable of shooting 720p HD video, and a battery that gets you 13 minutes of flight time.

If you're looking for a cheap drone, the Eachine E010 Nano Quadcopter is bound to grab your attention. On second glance, though, it's really just a toy, and the lack of a camera is a major restriction. It has its benefits as an introductory drone — a serious crash wouldn’t make a big hole in your pocket — but many consumers would soon grow bored of just zipping it around.

While it does not have a whole lot of features, Orientation mode is pretty useful. It ensures that your drone stays within connection range and won’t fly off on you. The LED lights are great for night flying, especially when the battery is low and you need to ground it quickly. It can do the basic flip approximately 1 meter off the ground to ensure it doesn’t collide.
There is an altitude hold function that allows you to take aerial shots by releasing the throttle.  Once the throttle is released, the drone hovers in place and take the shot. As a beginner, the headless mode will help you to understand the capabilities of the drone better. Once you’ve gotten conversant with the features, you can do aerial tricks and flips with the drone.
Most still cameras are 5 megapixels or higher. Therefore, do not be fooled by the claims of HD for a camera when the manufacturer is relying on the resolution for still photos. It is true what they are saying but not the complete story. Having HD resolution for still images does not explain the possibility of also having a lower quality for video-image capture. 
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