This thing moves, if you are looking for a fast e-bike, this is it. 1000W motor is impressive. Frame folds as well, which is how the battery goes in. I had to get something more compact for what I was looking for (I need folding bike for going into a small aircraft) so I bought a smaller e-bike already and this one has to go even though practically new. Comes with 2 sets of tires - original 26x4" knobbies, or the Vee Speedsters I put on which are great for road/path use. - 1000W motor - 48V 17Ah battery (816Wh) - Hydraulic disk brakes (not mechanical) - Alloy wheels - 21 speed - Headlight runs off main battery - Pedal assist or pure throttle - S900 display (link below on programming) https://vonaxusa.com/wp-content/uploads/2021/04/Display_S900_Manual_EFX10.pdf