Features 1. Advanced inverter technology, professional circuit design small size, light, suitable for carrying for person expecially. 2. Good ARC-ignition, anti-interuption, good push adjustable capability. 3. Good welding quality, deep molten, strong. 4. Suitable for decoration expecially, hardware etc. 5. Auto-matic over-voltage and over-current protection. 6. Be able to work continuously, be able to balance voltage when voltage of power supply is vaving.