The high voltage generator is convenient and practical, with excellent texture, and can serve you for a long time without being easily . The craftsmanship can serve you well without breaking easily. This is a very practical high voltage generator. Features - ColorBlack -Material:ABS, copper - Size: 7.00X3.00X3.00cm/2.75X1.18X1.18in Input voltage: DC 3V-7.2V Input current: 2A-5A High voltage type: pulse current type Output voltage: about 800-1000KV High-voltage two-pole discharge distance: 10mm-20mm Output high-voltage line length: about 100mm Input power line length: about 100mm ( is positive) Power supply: single or double 3.7V , battery; mobile phone battery (remove the protection board, the recommended capacity is above 2000mAh) or NiMH battery pack, 4V or 6V -acid battery etc. - A good substitute high voltage generator for your broken or worn out one. - Just connect battery and the , its discharge intensity is great. - Suitable for scientific experiment, electronic equipment, negative ion generator, small science project, and etc. - It is in stable characteristics, high performance and it is in great reliability, simple, easy to install. - Simple in structure, easy to use, not easy to deform, you can use it with confidence. Package list: 3 x high voltage generator