Simply speaking, it can be attributed to a few words: look, touch, ask, ride. First, look means closer check the electric unicycle self balancing scooter. First of all,check how the packing is, make sure that the foam and pearl board in the packing box has not scamp work and stint material, which can well protect the electric unicycle balancing scooter and spare parts; then assess how is what made of the electric unicycle balancing scooter, whether the housing is smooth or not; how large the aviation pedal material is; whether it has a good brand tires and 14-inch, 16 inch, 18 inch marked on package is consistent; whether the gap between the power switch is too large; make sure the battery indicator work well; above all,check that the packing accessories and instruction manual and warranty card and carried accessories, as well the charger, the auxiliary wheels, auxiliary belt, etc are complete, all of which must be correspondence with the brand model. The more careful you observation of detail,the more problem you can check. Second touch, check the single wheel self balancing scooter without riding. lift the scooter to check whether it is consistent with the proper weight; make sure that it is not easy to open the pedal aviation, and check how the magnets absorption is and how the tires are; pull the scooter back and forth and tilt by hand to see around how the power protection work. Third ask, it is to ask all the details. What we shall be most concerned about is the car Electric Motorcycle Scooters Company quality and after-sales service. Where is the car's hardware configuration, such as controllers, gyros, batteries, motors and other produced and how much.For a quality single wheel self balancing scooter, there is no virtual standard parameters; the software is independent property right; housing is own patent; there are unique characters different from other brands, like how large the waterproof degree, which road is can not be applicable etc; it is OEM from its own foundry workshop or others. We shall focus on the after sale including how long the warranty period is, how to repair when problems arise,how to do if the agent can not handle who pay for the freight. Fourth riding, if you are a newbie and do not know how to ride, it does not matter, you can find the placement of the auxiliary wheel, of course,we are mainly aimed at testing whether the manual calibration parameters are the same with what marked on the specification. We can straight, turn on the downhill, acceleration and deceleration of the car handling test; accelerate it to alarm rate, to check whether it is calibrated speed alarm, if there is a beep and Alice pedal protection tips, this is slightly different for each brand; fully charge the single wheel self balancing scooter for long-distance endurance riding and checking if km can achieve the required number; check the braking performance, take a look how far it would be braked when it is fast-moving, that is a safe distance, they must clear.! As long as you do master these points, I think, even if you are a newbie, you can buy a not bad electric unicycle balancing scooter.meanwhile,you need to learn from manufacturer's official website, forums and other places, as well ask some experienced riding friends, except for most of those who sell their own electric unicycle balancing scooter.