The Bob Beck's blood electrification device is based on an electrical current, while Spooky is frequency based. Many people build these units with a couple of batteries and some wire. The Bob Beck - Magnetic Pulser is designed to send a big burst from the magnet. It will shoot a coin across the room. The Spooky PEMF coil is not as powerful. But is probably just as effective as you will be able to run it longer.
For more details, please check the link from: