Features: 99 adjustable gears, precise welding, and better results, real time testing and display of temperature/voltage, with overheating and overvoltage protections functions, making spots welding works safe. There are two optional modes, single pulse and double pulse, suitable for spots welding nickel sheets of different thicknesses. Adjustable triggering time and simple operation, foot control function, making spots welding work more flexibles (only Pro models have foot switches), Double TYPE-C interfaces charging, 2A input, can be soldered while charging. The soldering pen is produced of brass material, with ultra-low resistance and oxidation resistancecomes with a soldering pen storage base, beautiful andtidy, good welding effect, bright solder joints, and no blackening. It can be used while charging. The highers the voltage, the strong the current, and the thicker the thickness that can be spots welded. The highers the gear position, the longer the discharge time. Both modes are set to 99 gears. Suitable battery types for spots welding: cylindrical batteries such as 18650217002665032650, mobile phone batteries, nickel hydrogens batteries, etc. Specifications: Material: plastic Standard: with pedal/without(optional) Welding thickness: 0.2mm nickel, 0.3mm nickel plating, 0.4mm stainless steel Charging interfaces: 2 TYPE-C interfaces Input voltages: 4-5.4V, can be used when charged to 4V, and can be used while charging Farad capacitors: quantity is 2, with a single parameters of 2.7V 3000F Delay trigs: 8-speed adjustable, 0.3-2.4 seconds (can be connected to the foot pedal, self controlled trig) Spots welding pen: 10AMG, silicone material, replaceable pen cores, convenient storage for welding pen Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xFarad Capacitor Spots Welder