The isinwheel U5 500W Folding Electric Bike features a 500W Rated Motor with a Max Speed of 20 MPH. It has a Folding Design and 20“*2.6“ Fat Tires. The 375 Wh Battery offers a Maximum Range up to 45+Miles with a 3 Hours Charging Time. Built with an Aluminum Body, it is strong and moisture-proof, supporting a 330Lbs Max Load. It is Safety Certified with UL Certification, BMS Battery Management, and 365-day Quality Assurance.