We upgrade our product because even though our black carve is a good product, it still can be better. Through this upgrade, we want to have no space to upgrade so we can keep black carve this way. We also want to set the top standard of electric skateboard. So this is the goal of our upgrade. Thank you for your support if you are interested. You could compare our product with any electric skateboard and you will find out that nobody can have this beautiful product with this price. Our black carve has been through 2 years and the quality is consistent. Visit here: https://www.ridefaboard.com/products/blackcarve