I bought the x4 a couple of weeks ago and I'm pretty amazed by the battery life, the speed and the overall quality of this scooter. I'm 1.77cm for 85kg and I can get up to 35km/h without any problem. The system over the rear wheel is really helpful to lock your scooter everywhere just like a bike. I'm just a bit disappointed that some screw are already rusted.
This is the second one that i ordered, its awesome and high quality.
The product is according to the description; good quality. Delivery made before the expected date.
Great products and great service!! 100% recommended seller!!