The XB-300Li is a Lithium Battery Powered Electric Bicycle, running on a 300 Watt rear hub motor. Made with all top of the line components this model includes a 7 Speed Shimano Tourney Gears & Shifter System, 7 Lightweight Lithium Ion Batteries, a 100% Aluminum Alloy Frame, fully adjustable seat (37 3/4" - 43 3/4") and an RST Capa T7 front fork, Brushless Hub Motor, smart charger - shuts off automatically when charge is complete, key start, variable speed control - twist throttle or pedal power assist, front and rear brakes, headlight, horn,battery indicator, cargo rack, 26"x1.95" tires on aluminum wheels.This bike can go 20 mph and up to 15-20 miles per charge, you can still pedal if charge is lost. The measurements for this bike is: wheel to wheel 72" - width 25" - to bars 37". Bicycle weight is 52 lbs. ( including light weight battery pack). Maximum Rider Weight is 350 lbs.