Specification: Gears: Thousands of combined gears can be combined (1000 gears +) Welding ability: 105% Performance: Over-current short-circuit protection, 0.2mm full electric welding, professional-grade development and parameter adjustment, pure copper solid thick welding pen, one-year standby in low-power, accurate power bank interface, built-in welding ammeter, over-temperature protection, use record query, timing automatic Power off, super fast charging, low current protection, screen brightness adjustment, silent mode. Battery capacity: 5000mAh Voltage: 4.20.05V Welding current: 6-800A Overcurrent protection: 1.12KA Full charging time: 2 hours Battery life: 800-2000 times Battery working cycle life: 1000 cycles Standby current: 20uA Theoretical standby: More than 2.5 years Material: ABS + PCBSize: About 112x80x30mm/4.41x3.15x1.18in Feature: 1. Easy to carry: The small spot welding machine has a large output power and is suitable for rapid welding of 0.1-0.25mm nickel-plated steel plates and 0.15mm pure nickel steel plates. Lightweight, space-saving at home and easy to carry. 2. Easy to operate: One key to open or close. It can be switched freely according to actual needs. Suitable for home use, DIY, repair, etc. 3. Welding pens: 2 mobile welding pens are made of 8AWG silicon wire and copper rod, and come with 2 protective sleeves. The welding pen allows a long welding range and can meet various welding needs. 4. Battery: 5000mAh high-capacity lithium secondary battery, low power consumption, long use time when fully charged. It also acts as a Power Bank to conveniently charge your phone. 5. Material/Self-inspection function: Made of high-quality ABS and PCB, it has extremely high durability and stable performance, and has a long service life. Advanced power management and software design, no reset and zero return during welding. When the welding pen touches the nickel plate, the self-checking function is automatically triggered, and the response time is 0.8s. Note:The product should be fully charged before first use. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Packing Included:1set X Spot Welder