Each magnet produces a field of 3ft radius on top of the magnet. Sharing the single magnet system would be mean that you both will have to sleep shoulder to shoulder and hip to hip or like spoons to get maximum benefits. The two magnet Pro systems can also be shared between two people sharing the same bed. The two magnets can be placed on either sides of the bed. One magnet under you and the other magnet under your partner. But since you are sharing the same controller, you both will have to use the same frequency/ sleep program. Since both the magnets are powered by one controller, you won’t be able to program each magnet differently. We tend to think that two controllers is superior to sharing one controller between two people because this will allow the both of you to set the controllers according to your individual preference and also you both will be able to go to sleep at different times as well.