The transaction went through quickly, and the product was delivered MUCH more quickly than promised.The instructions that come with the product (just a few paragraphs) were hard for me to interpret... basically to set the duration of the tone + vibration (both happen together - I didn't see a way to change), you take the front "cover" off of each pager, and press the very tiny button in the middle with something like a paperclip. The longer you want the duration of the beep/vibrate, the more times (up to 5) you push the button.There is also a button on the side of the pager for the recipient of the page to shut off the beer/vibrate, so it doesn't have to go through its whole cycle before being shut off.The product works as described, and is very cost effective. The instructions could use some updating, but it only took me part of an evening to figure it out on my own (the instructions gave clues and, after having done the process, aren't technically wrong.... they were just hard to understand.)