What this does is that it removes negative vibration and lower energies from environment and at the same time raises it’s vibrational level. Something that can be used at any place and can cover the entire house or space you’re at also can cover as far as the sound goes directly. Be warned not to overuse as it’s vibrational can go far more than most can handle directly but it doesn’t work on your system but rather the environment only as overusing can increase the vibrational level too much which is why it’s better to play once or twice in 24 hours in same place. Overuse can definitely make you feel uncomfortable due to vibrational intensity. Using it 1-2 times is more than enough. But there are also protection mechanism in place to avoid such effects which is why it won’t go anything beyond you can handle.