Among the world’s smallest consumer quadcopters, you can use the palm-sized X4 H107D both inside and outside. Take extra care if the day is windy though; despite its six-axis stabilizer system, this lightweight drone will drift off course in higher winds. And remember, a smaller craft is a bit more sensitive, so you need less gusto on the controls.
Almost ready to fly, the X4 H107D requires just a few calibrations typical of unmanned aerial systems. The package includes a protection ring, usually called a hull. The hull is extremely helpful, especially while you are learning to fly, as it protects both the craft and anything, or anyone, close by. However, unlike other drones, the propellers have to be removed before installing the hull.