1. Protection: it has short-circuit protection, reverse polarity protection and waterproof protection. 2. High power and low energy consumption: with high power and low energy consumption and excellent results, the use of frequency conversation electronic technology. 3. Full current limiting protection: intelligent pulse, high frequency or low frequency regulation, can be adjusted according to the need to adjust the frequency of electric field size. 4. Easy to carry: with suitable size and suitable weight, this inverter is easy and convenient to use. 5. Material: thisinverter is made of good material, which is durable and useful. Thisinverter has short-circuit protection, reverse polarity protection and waterproof protection, and with high power and low energy consumption and excellent results, the use of frequency conversation electronic technology. Specifications: Type: 4 tubes 58000W, 8 tubes 68000W (optional) Material: aluminium alloy Input Voltage: 12V Size: 17*11*4cm Lead acid battery: 12V10A lithium battery 12V30A Package Included: 1* inverter