1. Portability: The combination of pulley and pull rod makes it easy to move by one person; the double handle design allows two people to lift it easily. 2. Shell: The combination of super-strength one-piece aluminum alloy shell and high-strength fireproof plastic shell makes the machine more durable. The design life is more than 20 years. 3. AC output: pure sine wave high-power continuous output 2000W, peak 4000W, frequency 50Hz/60Hz can be switched, perfect matching with electrical equipment. 4. DC output: 12V /120W supports cigarette lighter and DC5521 output; 5V /15W USB output; 5. Lithium iron phosphate battery: with high safety, the service life is as long as 6000+ times, and the capacity: 2500Wh