I can't remember if I bought this Lexma mouse at P500 or at P900 at Office Warehouse , I'm using this kind of mouse for 2 years already and the one that I'm using starts to be wonky and dirty. I fixed it by cleaning the plastic pin for the buttons and clean the optical sensors. I want to use this again because my hands are very comfy and I didn't even experience any carpal tunnel syndrome, thanks to the cushion that supports my palm whenever I use it.
I'll check if SM Bacoor have this mouse.