Specification: Input: for DC 2.4-3V Output: 7kV Outside Dimension:40 *23 *16mm/1.57*0.9*0.62" Wiring: Short-term connect input voltage, the positive connect to the red line , white line connect to the negative terminal of the battery Long-term output high voltage Note : The high-voltage module should avoid the use of electricity in high voltage no-load . (Power must be adjusted to a suitable distance to the high-voltage output line , battery capacity is proportional to the distance and the use of the high-pressure arc ( not a voltage as high as possible , you must provide enough current ) . Experimental test of the arc distance from short to long , Do not exceed the maximum arc distance electricity, energy can not be released due to high pressure , can easily damage the module. ) Quantity:1pc