Paracorder 667 (EMF Strobe and ION detector) ENERGIZES GHOSTS by mimicking the Earth's VORTEX action (by pulsating EMF pump) Detects IONs and Electrostatic fields ( Ghosts ) and alerts the user with sound and lights The VORTEX EMF energy is used to enhance EVP sessions Used as a tabletop yes/no paranormal communicator (made for ages 12 and up) Uncomplicated design. Packed with technology! uses one 9V battery (not included)