Feature: 1. Excellent Electrical Conductivity: Integrated gold plated pen terminal, low contact resistance, suitable for quick welding of 0.1‑0.15mm nickel plated steel plate and 0.1mm pure nickel steel plate. 2. Long Weld Range: Two mobile spot pens are made of 10AWG silicon wire and copper rod and come with 2 protective cases. The welding pen allows for a long welding range and can meet a variety of welding requirements. 3. Energy Saving: 5500mAh large capacity lithium battery, low power consumption. The thickened pure copper strip and imported MOS tubes can save energy and provide longer service life. 4. Portable: Mini size, save space at home and easy to carry. Long service time when fully charged, can also be used as a power bank to easily charge your phone. 5. Easy to Operate: Open or close with one key. 9 levels of power to choose from, can change freely according to your actual need. Suitable for household, DIY, maintenance and so on. Specification: Item Type: Spot Welder Material: Aluminum Alloy, Electronic Component Weight: Approx. 538g/ 19oz Model: DH20 PRO32 Color: Black Output Voltage: 4.2V(MAX) Output Current: 650A(MAX) Design Current: 1200A (MAX) Welding Thickness: Approx. 0.1-0.15mm/ 0.004-0.006in Pen Wire: 10AWG Battery: 3.7V 5500mAh lithium batteryx1 (built in) Welding Output: 4.2V 650A(MAX) Welding while Flushing: Support USB Output: 5V 2.4A(MAX) Full Charge Welding Times: about 1000 points Charging Port: Type C Size: Approx. 103x81x29mm/ 4.06x3.19x1.14in. Package List: 1 x Spot Welder2 x Spot Welding Pens1 x Type C Charging Cable1 x 0.12x8mm Nickel Plated Steel Strip (2m) 1 x Specification1 x Plastic Box Note: 1. Due to manual measurement, please allow an error of 1‑3mm. Thanks!2. Pictures may not reflect the actual color of the object due to different shooting lighting and differences between monitors.3. This product is not equipped with a charger, you can use the mobile phone charger to charge this product, so you can normally use this product no matter your country uses 110v voltage or 220v voltage.4. The built‑in battery is a high‑speed discharge battery. In order to transport and storage, the battery power is very low, and it is impossible to weld before charging.