Feature 1OLED color display, gear, voltage and power can be clearly displayed. 2110 gear soft and fine adjustment, wider adaptability, thick and thin steel strips can be welded. 3Fast charging, 2-hour charging, 2.1a high current fast charging, compatible with all mobile phone charging heads,It can be used as a power bank. 4Pure copper pen holder, imported welding needle, good conductivity and durability. 5Solderable nickel mobile phone battery.Features: OLED color display, gear, voltage and power can be clearly displayed. 110 gear soft and fine adjustment, wider adaptability, thick and thin steel strips can be welded. Fast charging, 2-hour charging, 2.1a high current fast charging, compatible with all mobile phone charging heads,It can be used as a power bank. Pure copper pen holder, imported welding needle, good conductivity and durability. Solderable nickel mobile phone battery. Specification: Material: aluminum alloy Battery: lithium battery Welding capacity: 0.15mm nickel-plated steel strip Power: 5V/2.4A Battery capacity: 5000mah Weight: 519g Package size:27.5x10.5x5.5cm Packing List: 1xWelding Machine 1xUSB 2xWelding pen 1 roll nickel-plated steel stripPackage List1xWelding Machine 1xUSB 2xWelding pen 1 roll nickel-plated steel strip