Usage Tips:Input Voltage: DC 3 V to 6 V,Input Current: 2 A - 5 A Output Voltage: 400000 V(Please Pay Attention to Safety) High Pressure Discharge Distance Between: 10 mm - 20 mm The Output High Voltage Wire Length: 100 mm.Input Power Cord Length: 100 mm (Red Line is Positive) The High Voltage Generator Can Be Used as A Scientific Experiment,Electronic Equipment, Negative Ion Generator, High Voltage Source in The Production of Small Science etc. Colour: black Material: metal + plastic Package Contents: 5 x High Voltage former Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.