The meditation for sleep induction is a 15' MP3 audio ready to be listened with any MP3 player, smartphone, computer, or tablet. We built this meditation audio with brainwave entrainment and binaural beats technology. You should know that brainwave entrainment is the physiological effect that helps to heal your mind and body. Binaural beats means that you shoud listen to the audios with headphones. The purpose of this meditation audio is to help you to sleep quickly and easily.