Amazon カスタマー 3 The product came on time from Amazon in 2 days. The material of the scooter looks to be of high quality.It has a android app that connects to the scooter easily. I can see the condition of the scooter and set some controls, like lighting and speed limit.I managed to use it in the apartment courtyard and parking lot to test the throttle and braking of the scooter. It works well. As a product, it meets my expectation of a Segway scooter.Unfortunately, after 3 days of use, the scooter stopped working, and had error '14' displayed on the HUD (see picture). The customer support is very bad. I have emailed them, but still no reply.