this box has been called many things but we have decide to use the term "rock box" it is used to tap,record and monitor fone calls close by here is a list of materials you will need -soldering gun along with solder of course -a hold pair of headphones -a fone cord and this text now that you have all that cut off both ear piece that go to the headphones after doing that strip both of the ends in tell you see copper you will need this. you have just completed the first part after that get you fone cord and cut the end off of it perhaps you can use that for a busy box or something els? after cutting that off strip the end in tell you see a red and a green there may be more colors just avoid them after seeing the red and green attach the two copper wirers sticking out of the headphones onto the red and green separately it doesn't matter what order or orÊhow you do it as long as it is separated from each other after attaching solder them up and try sticking tape around each peace you solder to avoid it becoming a busy well you have made it now how to use it? plug the phone part into the wall and the headphone jack anywhere you see a mic or headphone input that fits if you put it in a mic outlet you can record fone calls on the line the phone cord is plugged in this is great for recording pranks have fun with it and experiment if you don't have solder just use tape all you will have to do is be more careful....