Detailed Description

Fully assembled Geiger Counter w/ Beautiful Firework Fountain Display flickers a super brilliant rainbow of colors as cosmic rays or other sources of radiation strike its central upright super sensitive GM tube. Uses the ultrasensitive J304 tube which is sensitive to Beta and Gama rays. Four 10mm RGB clear lens LEDs provide an amazing display even in a well lighted room when radioactive rays strike the tube. Has switch on PC board to allow you to hear clicks if you prefer (like a regular Geiger Counter). We know you will be amazed and mesmerized with the display. The board is fully assembled about 4" square. The tube stands upright about 4" tall.Please note, due to high humidity effects on high voltage circuitry, this unit will not function properly near ocean coasts or near large bodies of water without sealing it inside a moisture proof case. No case available. Operates on one 9V battery (not included). Ready to go, just screw the GM tube into its socket, connect 9V battery and turn it on!