Build quality is fairly damn strong. That and the brakes are why I gave it two stars. Or else I'd personally have offered it one. I’d give it zero if I could. I purchased S2 Professional and S2 for me and my spouse. We are so delighted. Clean ride, https://www.electricscooter.ltd/patinete-electrico-escooter-foot-moto-electric-motorcycle-electric-scooters/