This is the Extrbici electric bike with fat wheels suitable for mountain trails and different weather conditions including rain and snow. It has a 500w motor and can go 20-25 miles in full electric mode and 25-50 miles in assited pedal mode depending on conditions. If you have the 1000w motor then it will go further with 25-30 mile coverage in full electric mode and 3-55 miles with assisted pedaling. It therefore can help you out when the terrain is tricky or you get tired so you do not have to pedal all of the time. The battery charges quickly in 5-7 hours and it is therefore able to be charged easily overnight ready for the next day.