I bought this as well. Works fine. Yes I could have managed with a cloth doing the hard work myself. But I am way out of shape to be able to do it comfortably.
Windshield Wonder - Easy Glass Cleaner Microfiber Brush for Car /Home/Office Price: Buy Speedwav Windshield Wonder - Easy Glass Cleaner Microfiber Brush for Car /Home/Office Online in India - Infibeam.com
Here is a video review from someone who takes reviewing these things very seriously.
https://www.youtube.com/watch?v=wHalhPRjxRs
Windshield Wonder - Easy Glass Cleaner Microfiber Brush for Car /Home/Office Price: Buy Speedwav Windshield Wonder - Easy Glass Cleaner Microfiber Brush for Car /Home/Office Online in India - Infibeam.com
Here is a video review from someone who takes reviewing these things very seriously.
https://www.youtube.com/watch?v=wHalhPRjxRs