The Velectrec (also branded as Vefreedom or EUY) Cityrang 4.0 is a fat-tire step-thru electric bike designed for both urban commuting and rugged terrain. It features a robust 750W motor, a long-range 48V battery, and multi-terrain 20-inch tires. Electric bicycle with only two months of use; it has a flat rear tire, which is why it stopped being used.