I'm only explaining the underlined terms. If this is not enough, you're in the wrong business:-)
browse: look at your native language dictionary - to look over casually (as a book), inspect
brought about: which is created; "overbalance" is strange
is matching most (not utmost!) of the function descriptors: corresponds to most of the function descriptors
otherwise: look at your native language dictionary - no meaning in this context, read "without prior notice"
the real product should be taken as a priority: they mean the real product should be taken as a reference and not just the pictures
as long as the time is up: when that countdown time has passed