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.
It is important to understand the warning about wind because wind is the most likely cause of serious problems with these drones. The drones in this category do not fly well in the wind because their motors are not strong enough. It is easy to lose them in the wind, so do yourself a favor and do not attempt to fly them, especially up high, if there is even the slightest wind outside. It would be better to fly them indoors if it is a windy day. 

With headless mode, you don’t need to worry which way the drone is facing because your controller is the basis for the drone’s orientation. In other words, whichever way the controller is pointing is the way the drone is pointing. This will help you master all aspects of drone flight, and as such it is one of the top features that beginners should consider.
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.

If you're flying within the United States, you need to take heed of FAA guidelines—or be prepared to face potential fines or jail time. There are no-fly zones set by the FAA, so don't take off if you're near an airport without notifying the control tower first. And, even if you're out in the middle of nowhere, don't take your drone above 400 feet. Most are set to obey these regulations out of the box, but controlling a quadcopter is just like driving a car—even if you missed seeing that speed limit sign, you're still liable to pay the ticket.
Before settling for any of the best drones under $100, ensure that the spare parts are easily accessible. You will definitely require an extra pair of propellers, other than the inbuilt pair, as well as essential tools to fix the spare when the inbuilt gets bad. You will also need sufficient protectors for your quadcopter – they come handy in protecting your drone from getting damaged, damaging properties, or injuring people during clumsy flights and landings. An extra pair of batteries is also a good buy, especially in instances where the drone is expected to serve longer than usual. The batteries of most drones under $100 are usually sold in six-pack sets, alongside a charger. With this set, you can get an average flight time of 5-10 minutes before recharging them or switching them with charged ones. It is important to note that the battery time depends on the blade protectors and the presence or absence of a camera.  
We test two main things when reviewing drones – their flying performance, and the camera’s video and stills quality. To test flight, we take the drone out to an approved Flying Field like the one in Richmond Park and check its responsiveness, speed, stabilisation, obstacle avoidance and the accuracy of safety features like return-to-home. We also assess the stability and quality of its video feed from its maximum distance and its battery life claims, based on real world use.
Finally, in the number five spot for this list is the Syma X11. For the drone enthusiasts who may feel a little intimidated by some of the larger drones, the Syma X11 R/C Quadcopter is a perfect alternative. This little R/C unit is 15 x 4 x 8 inches in its dimensions, and weighs just over fifteen ounces. It is a good drone for those who are more comfortable with other R/C units and want something that is easier to control with a price point that is reasonable.
The most recent variant, the cx10c, is another small improvement over the other two. Again, it only adds one feature, but this time its a little bit more substantial, this time, they’ve added a camera. With a micro sd card you can watch videos of your flights from the perspective of the drone. It may not be a great camera, its not even a good camera, the footage is mediocre and would never compare even slightly to a high end multirotor, but for the price ($25) and the size (roughly the same as before) its amazing that it includes one.
All of these multirotors include the essentials; a battery, charger, remote (more commonly referred to as a transmitter), and of course the quadcopter itself. All of these are controlled using a standard mode 2 style transmitter with the throttle on the left and adjustable trim settings. They all also handle using the same basic control scheme and the same basic auto-leveling flight mode, but much like a car, they all feel distinctly different to control.

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.

best drones under 100 amazon