Comes with 1 year warranty as long as you don't temper with the warranty sticker. valid for manufacturing defects, eg u put memory card into ur psp but nothing can be read. when u get the memory card u can write erase 10 times or more, if got problem i refund or offer 1to1 exchange
Non laggy Using one for my PSP, no problems.
PM me or reply under this thread with name and contact number if interested