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 alloy soldering iron head and USB soldering iron charging cable. Safety protection: press the switch button 5 times 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.