AWithZ MC1 DIY Portable Spot-Welding Machine Micro Spot Welder with 7500mAh Built-In Rechargeable Battery /Power Bank Function for iPhone, Android Phone Battery Flex Repair Tool. Features: High quality material: This lightweight, portable spot welder Efficient welding: It is a total of 611 gears of output power, easily adjustable, for precise welding; and there are LED lights to indicate the working gear. Good performance: Welding pen, with gold-plate terminal, long enough, flexible to use, quick to install, fine conductivity, ensures beautiful welding spots. Safe, Reliable Use: The welding machine has low voltage, over current and over-charge protection, low battery alarm function, auto-off under low power. Power Bank Function: Built-in rechargeable battery, 4000mAh high capacity, supports it to fast charge the mobile devices via 5V 2.4A USB port, very convenient. Specification: Material: Aluminum alloy Output current: 650A (Max) Capacity: 4000mAh Input current: 5V/2.1A(Max) Input interface: Type-C port Host size: 165*90*30 Host net weight: 272g Packing size: 200*110*65mm Battery: Rechargeable polymer lithium battery Packing List: 1 * Spot Welder 1 * Welding Pen 1 * Type-C Charge Cable 1 * Nickel Sheet 2 * Magnet Pushpin