[Large LCD Display] The high-definition LCD digital display shows the output power in real time, just adjust the power to the most suitable one according to your needs. [Pure Copper Clamp] High-temperature and rust-resistant pure copper clamp can withstand long-lasting work in both severe cold and heat. [Advanced IGBT Technology] Advanced IGBT technology improves the reliability of portable welder. Powerful Arc-force provide smoother welding experience, you just need to concentrate on your work.We are not responsible for undeliverable address. X'mas or other reasons. Your patience is always appreciated. Dear friend: Welcome to Sertred51, our services are available: Monday To Friday: 8:30 to 18:00 (Beijing China time) 1. If it's non-workdays, please kindly be patient and considerable to give us a little more time. Specification Input current: 43.6A Voltage: AC 110V Rated input power: 4800W Rated no-load voltage: 56V Welding current range: 20-120A Welding voltage: 24.8V Cooling method:Air-cooled Shut Down: Auto Stop USB: 5V 1A Package: 44.535.513.5CM Package Weight: 4KG.