Rechargeable soldering iron: 5V 15W battery powered soldering iron with built-in 1100mAh battery. When charging the wireless soldering iron, connect the USB interface to the computer, charging bank or mobile phone charger. A single charge lasts for about 2 hours and lasts for 40 minutes. Voltage adjustment: the knob at the bottom of the soldering iron can adjust the voltage in both directions, the adjustable range is 3.3V-4.8V, and the heat is up to 716 /380 Press and hold the switch button for 8 seconds to quickly heat, then repeat the operation to continue heating. 510 thread interface: The soldering pen is made of stainless steel, and the 510 thread interface can be connected to the copper soldering iron head and USB soldering iron charging cable. Safety protection: press the switch button 5 continuously within 2s, the switch will open, and the indicator light will be on. It automatically enters the sleep mode within 10 seconds without any operation . Portable soldering iron: The wireless charging soldering tool is portable and easy to carry. It is suitable for DIY design, electronic product welding, jewelry maintenance, electrical accessories, circuit board maintenance, etc. Color: Black material: metal Package Contents: 1 x soldering iron Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.