1.One handed grip, easy to operate, convenient to carry to any work site, especially suitable for outdoor operations or hard to reach spaces 2.1.33 inch lcd display design, clear and intuitive operation interface, making parameter settings and welding process monitoring easier to understand 3.Built in intelligent chip, adjustable from 1 to 99 levels, the larger the level, the higher the output energy 4.Impact protection, short circuit protection, overcharge protection, overdischarge protection, and over temperature protection 5.Widely applicable to cylindrical batteries such as 18650/26650/36650, mobile phone maintenance, lithium battery assembly, manual diy, etc Product name: handheld digital display spot welding machine Color screen size: 1.33 inches Charging voltage: 5v/1a Output voltage: 4.2v Output current: 800a Battery capacity: 2600mah Battery type: lithium polymer battery Adjustable gear: 99 gears are adjustable Charging interface: type-c Matters needing attention: 1.Do not modify, disassemble, or repair this product on your own 2.It is strictly prohibited to let the product come into contact with any liquid. Do not immerse the product in water or wet it, and do not use the machine in rain or humid environments 3.It is recommended to use the product at an ambient temperature between 15℃and 50℃. If the temperature exceeds the usage range, it will affect the spot welding effect and service life of the spot welding machine 4.It is prohibited to use chargers that exceed 5v=1a for charging 5.Pay attention to fall prevention, as falling may damage internal components Colour:Black Material:ABS Size:196x41x25mm Package Contents: 1 set x Digital spot welding machine