1、Material: Aviation high speed rail aluminum alloy shell, aluminum alloy shell is fire resistant and fall resistant, and the anodic oxidation process of the safety surface is beautiful and wear resistant. 2、Soldering Pen: Gold plated pen tip, copper pen barrel, copper oxide aluminum welding needle, grasp every detail, just for better use. 3、OLED Color Screen Portable Spot Welder: Spot welding is sturdy and visible, 101 gears of power adjustment, 31 gears of delay adjustable, small resistance and low heat generation, with temperature display. 4、Scope of Application: 18650 and other cylindrical lithium batteries, nickel metal hydride batteries, and Cd Ni batteries can be welded firmly. It can also be used to weld iron, steel, stainless steel plates with thickness less than 0.2mm/ 0.007in and other iron, steel, stainless steel materials. 5、Temperature Control Protection: Automatic power off when the temperature exceeds 60 ℃, with perfect overcharge, overdischarge, overtemperature and other protection functions and double protection performance. 1 x Spot Welder1 x Welding Pen1 x Data Cable1 x Roll of Aluminum Sheet1 x Polished Tin Foil1 x Storage Bag1 x Chinese And English User Manual Item Type: Spot WelderProduct Material: Aluminum AlloyBattery: Lithium Battery (Shipped With Built in Battery)Battery Capacity: 10600mahBattery Internal Resistance: 0.5 MilliohmsDelay Time: 31 Levels Adjustable 0.5- 3.5sPower Compensation: Automatically Compensate According To The Remaining PowerSpot Welding Power: 101 Level Adjustable 0-100%Automatic Shutdown: 5 MinutesDisplay Screen: 0.96in OLEDCharging Input: Type C 5V 2AOutput Interface 1: USB A, 5V 2.4A MAX VolumeSpot Welding Joint: EC 5, 4.2V MAX