first-day bike light fall apart. after few hours ride front wheel become lose and open itself, it happened twice a month. nowadays the brake making too much noise and the display not working properly when it shows two bar charge remaining that's mean it's finished this is not a big issue for me. Anyway, I love this bike it is one of the good bike at this price point. hope the next version will be better and improved, and thank you so much for the first delivery.