X-Treme XB-305SLA Ladies Step Through Electric Mountain Bicycle (Aluminum Color) 7 Speed Shimano Tourney Gears & Shifter System 300 Watt Brushless Hub Motor (motor is in center of rear wheel) Top Speed of 20 MPH Up to 20 Miles per Charge (can still pedal if charge is lost) 350 Lb. Maximum Rider Weight - Distributed by: Discount Scooters and More