Features: -The use of the highest grade welding is only slightly less heating loss, higher current, and stronger welding -The built-in power bank HD screen displays accurate power, which is obvious. -The single-chip circuit is compact and reasonable, and the brass gasket is fastened and the current sharing is visible. Details can be seen everywhere... -Circuit double-stick 4 MOS design, double-sided current-sharing copper bar, double-section ultra-high rate power lithium battery bolt fixation, providing ultra-stable contact -Overshoot protection, over discharge protection, over voltage protection, over current protection, over power protection, temperature protection. Specification Welding ability: 0. 2Nickel-plated steel strip (full charge) Protective function: Over current, over discharge, over charge, etc. power Bank: Built-in 2.4A/2. 1A charge and discharge weight: About 440g (including packaging) Full of time: About 2 hours Package Include: Digital display welding machine host x 1 Solid soldering pen x 1 pair Charging cable x 1 2m nickel belt x 1