Much brighter than i thought it would be, definitely powerful than stock. I fitted the LED by myself and it's so easy to install. I feel the High beam is not that brighter as low beam.
The seller will call u after placing ur order and asks ur vehicle model to make sure the size u ordered is a correct fit for ur vehicle.
The H4 fits perfectly to my Alto K10 but most people would face the problem with the small size rubber cover (provided for the stock light) that cannot suit the big size of the body of LED, I make some small cuts and now it's completely fine.