Irrespective of the dimensions of your quadcopter, they must not go higher than 400ft above the ground. Likewise, you must always maintain a clear line-of-sight with the machine at all times. You are also expected to adequately inspect your device before each flight session, to ensure its readiness and airworthiness. This is necessary to prevent unnecessary flight accidents.  
Altitude Hold The drone will constantly move to a predetermined height, which facilitates control. Great drone for children and beginners. Battle Drone Fun Compete with the opponent firing the infrared, the drone will land slowly after 4 strokes. Headless mode You do not need to be anxious or confused with the direction of the drone when it flies away. In this mode, the front is in any way that the pilot is watching. Flight time 9 minutes, 3-speed mode, 3D flips, emergency stop, recalibration of a key. A key start / landing The quadcopter is equipped with a key that starts and lands, which makes the drone easier to fly and better to control.
the first thing we do when we get a new drone is beat it up a little bit. We don’t kick it down the stairs or anything, but we’ll give it a few knocks, twists, and shallow drops to assess the build quality and durability. Does it feel flimsy, or does it feel like it could survive a crash landing in the park? We give each review unit a light beating (and usually a couple unintentional crash landings) before we give you a definitive answer on how durable it is.
For video quality, we shoot a variety of clips at various resolutions and frame rates, including the maximum available. We film high contrast and low light scenes, along with close-ups of people to evaluate detail and skin tones. Special automated modes like DJI’s Quickshots are also tested. These uncompressed files are then evaluated on a calibrated monitor, along with the drone’s still photos. Stills are shot at maximum resolution and, if available, in Raw. We check for colour, noise and dynamic range, and also look at other shooting modes like HDR and panoramas.
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. 
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