I purchased Lenovo K3 Note last year product design is very simple but its hardware is not good.
In my phone I observed that charging speed is not good with its original charger. It takes minimum 1.5 hrs to get full charge.
I contacted to Lenovo customer care about this issue they said that this is standard speed from Lenovo side and its best speed too I said them 1.5hrs is not good speed because any other phones take only 40 Minutes maximum to get fully charged. In this price range all other phones are providing good charging speed but Lenovo has this problem.
Sound quality camera and other features are ok but without battery power its worthless phone. My suggestion is not to buy Lenovo products. Market has other good reputable manufacturers.