This is the all new LED/Magnetic Resonator (both included) EM-272b device. Rechargeable and programmable with any of over 1800 frequencies. Comes with 2 magnetic resonator pads. Can be used singly or in combination with LEDS s add-on. LED screen showing frequencies in real timeProgrammable with EM272B SoftwareSeven-channel magnetic frequency generatorTwo channel Skin Electrode generator Includes 2 magnetic disks Includes 2 electrode lead wires Includes 5 packs of skin electrodes Includes 1 Carrying Case Can be run while connected to a PC or independently with the included AC charger or rechargeable battery.