Precision, control, and portability for electronics and jewelry work. Key benefits Improve accuracy and reduce rework: advanced temperature control and a builtin display show the exact operating temperature so you can solder with confidence and repeatability. Adapt to each task: a threegear adjustable function lets you match heat to the job — use the red setting for maximum heat and the green setting for minimum heat. Ready wherever you are: compact, easytocarry design charges via USB (no extra batteries), so you can work on tabletop projects or onsite repairs without swapping cells. What it does Temperature display and control: realtime readout removes guesswork and speeds setup for delicate or demanding soldering tasks. Threegear adjustment: three distinct power/heat levels provide flexibility across components and materials. Portable power: USB charging enables use from power banks, laptops, vehicle chargers, or wall adapters for convenient field use. Who it's for Hobbyists and makers who need precise, repeatable solder joints for electronics or small metalwork. Technicians and pros who want a compact, reliable tool to improve production efficiency and handle a variety of jobs. Jewelry makers working on fine connections where controlled heat prevents damage to components and finishes. Compatibility and performance Multipurpose tool for electronics , circuit board work, and jewelry assembly or . Compact design supports easy storage and transport; USB charging eliminates the need for replaceable batteries. Display and adjustable gears provide precise control for different component sizes and heat tolerances. Practical use scenarios a smartphone or small appliance onsite: bring the pen to the workbench, select the appropriate gear, and rely on the temperature display to avoid overheating sensitive parts. Jewelry soldering and assembly: use lower heat settings to join small chains, jump rings, or findings without discoloring nearby metal. Prototype and hobby electronics: perform quick boardlevel soldering and rework with adjustable heat so components and traces remain intact. What to expect A versatile soldering iron pen designed for both novices and professionals. Straightforward controls: threegear adjustment with color indication (red = maximum heat, green = minimum heat) and a temperature display for precise work. Portable charging and compact storage for use at home, in the studio, or in the field.