. USB interface. 2. 3 temperature zones (Hot air and Infrared) 3. With infrared heating panel, more uniform heating 4. Hot sale model, appreciated by many customers. 5. Low cost. 6. Technical support is always available 7. Original Factory, search worldwide distributors where this Hot Sale WDS-620 BGA Welding Machine Good Price can be used for? 1. For repairing Mobile phones 2. For repairing Laptops / Laptops / computers 3. For repairing game consoles, especially for XBOX360 / PS3 / WII 4. For repairing any other motherboards with size 22x22mm at 500x400mm 5. For preheating chips or motherboards before soldering to improve recovery efficiency.