I have been using this for 8 months now and it works superbly on all the surfaces like wood/bed sheet/Cardboard/Glass/Flooring etc. The size of the mouse looks as it’s a mini mouse, but no its not. The size is just perfect for a laptop user.
I guess people who had or are using bigger size mouse will find it like a mini mouse. The mouse has a tiny hard to reach on-off switch under it, that relay helps to save battery, just switch it off while you not using it. The weight of the mouse is lighter; my feeling is if it had little extra weight on it the gripping on the surface would have been more effective.