Features: Small size, high power. The welding pin can be removed and replaced. Fully charged can spot weld thousands of solder joints. The current is adjustable. The operation is simple and easy to learn. The solder joint is beautiful and firm. Note:Special for spot welding batteries, not copper, gold, silver and other metals. The latest generation is improved and upgraded, even 0.2mm can be soldered Automatic welding adjustment method: Welding 0.1mm, current adjusted to 5 position Welding 0.15mm, current adjusted to 6 positions Note: The 3500W spot welder is a welding pen that can not replace the welding needle, and the 5000W can replace the welding needle. Package Includde: 1 x 5000W Mini Spot Welder Kit 1 x Charger Shipping 1.If you need to buy in bulk, please contact, we will reply in 24 hours. 2.We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. 3.Usually product Reaches after about 12-45 business days depending on destination. If you have not received your shipment within 45 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Refund or resend product will be offered if item still not received. 4.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We ask you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them! THANK YOU :)