The DH30 is new to the market, a mini spot welder that can weld 0.1-0.15mm nickel pieces in up to 30 (MAX) positions was introduced. 30 Gears Adjustable. This mini spot welder equipment can be adjusted to make the welding more precise and the spot welding effect more perfect. Upgraded OLED display screen design. It has a 0.91" screen, which makes it very easy to visualise the power level etc. It is very convenient and quick. Built-in 5000mAh rechargeable battery with type-C charging cable, can be fully charged within 3 hours. What's more, it is also a portable quick charge bank. Integrated forming welding needle. Gold plated pen end, red copper pen holder, copper oxide aluminum welding needle. Untra-low resistance, oxidation resistance, easy to use.