The bike works, like it is planned, very easy to use. I enjoy it daily. Recommended! Maybe the 500W or 750W models are even more recommended, but now I use happily my 20" wheel model with 250 W. The distance is by guess 50 km, I never waited till the end of charge, I charged the battery at 40%. I will try it to the last drop of charge to see, how long it goes.