This bike has many drawbacks. The iSmart is the most useless bike as I have seen it. The opinion of many people is also the same because the voice of it never goes away. No matter how much it is serviced, but its voice will never go out. There is always the sound of fall again. You always have to keep extra oil in this bike because anywhere the oil runs out. You will have to push the bike as the bike does not give the slightest mileage. It looks a bit good to see this bike but in other cases it is very bad, so it is our opinion that never take this bike.