Took me about an hour or so to install took longer because the philips screwdriver they included was cheap and stripped after the second screw but luckily i had another but only after trying to use the stripped one for 15 mins and not realizing it was stripped

There are a few videos for installation i watched the one for drone valley titled how to installing an argtek range extender kit on a dji phantom 3 or phantom 4 he was very thorough

My drone distance went from about 3500ft over heavily populated midtown atlanta ga to over 10000ft before i brought it home