The frame can fit riders up to 70 inches in height. So, our bike is suitable for a wider range of people. Our handlebars are wider and more comfortable. Super large, super comfortable. The second seat has a backrest, hand bar holder, and foot pads. Super shock absorber. Vs others have less shock absorber.There are front basket, charging mobile phone holder with usb charger and safety alarm. 48V500W super strong and real . Real high-quality battery 15AH. There is an offline store in Los Angeles, Usa. The after-sales service in the United States is fast. If there is a problem, accessories will be send and service can be provided quickly.