Adjustable Portable Spot Welding Tool Pens with Quick Coupler for Battery 18650 Description: Compact size, lightweight and portable, easy to put in your pocket and carry with you. With pen: Copper rod, with good conductivity and low contact resistance. Automatically after the pen contacts the sheet, the response time is only 0,8 s. Easy to use, button to turn on/off. Provide 6 gears output power, adjustable, circulating 1-6-1, more accurate. Press long to start, the last gear used will be displayed, short press time to add gear. Equipped with an indicator light, easy to connect to your phone via USB cable. , standby mode With a low power consumption design, you don't have to worry about running out of battery when putting away. Equipped with a high-performance lithium battery, which when fully charged can continuously score thousands of points on a sheet with a thickness of 0,1 to 0,15 mm. software management and design, will not be reset and will not return to zero when . Specification: Battery: 3,7V Lithium Battery, 5300mAh Gears: 1-6 gears thickness: 0,1-0,15 mm/ Product Size: 140x80x40mm / 5,51x3,15x1,57 inch Item Weight: 380g The package includes: 1 pc. Machine pen 2 pieces of pen sleeves 1 piece sheet 1 piece USB cable