The DaVinci Citta Trailrider, is an electric powered front wheel attachment that fits most rigid frame wheelchairs and allows the user to travel around the city with ease. It has a 350 watt, high-torque gear drive motor with high-power programmable 12fet controller. The distance travelled depends on a number of factors speed, weight of rider, terrain and temperature. However, generally an 80kg rider on reasonably flat terrain at about 10 to 12 mph could get up to 20 miles on a 10ah 36volt battery.