1. Advance digital control and !GET Inverter Technology. 2. AC/DC Pulse TIG and MMA Function. 3. MMA :HF:Arc Start : Arc Force : Anti Stick : TIG : HF/Lift ARC start. 4. 2T/4T ,down slpoe function for TIG. 5. Microprocessor Controlled, 10 Memory Channels. 6. Quick Gas Connector, Easy Operation, Over Heat and Over Current Protection.