Precise temperature control: Adjustable 220400 degrees Celsius range with a clearly marked knob for fast, repeatable setting. Allows you to match temperature to different solder alloys and tasks to avoid overheating components. Fast, powerful heating: 65W output delivers rapid warmup and reaches the set temperature in seconds, reducing wait time and improving work efficiency. Flexible lowvoltage power: Builtin DC5.5*2.5 power jack accepts DC 12V–24V input. Can be powered directly from lithium battery packs or laptop power supplies for safe, portable use without a bulky AC adapter. Visible heating status: Transparent housing lets you see the internal heating indicator light at a glance so you can confirm operation and heating state quickly. Practical design and compatibility: Lowvoltage input and standard DC5.5*2.5 connector make the unit compatible with common mobile power sources and laptop adapters, supporting onsite repairs and mobile workflows. Suitable applications: Field electronics and diagnostics — power from a laptop adapter or battery pack to perform fast soldering and component replacement on the go. Hobbyist and DIY PCB work — precise temperature control for throughhole and surfacemount soldering tasks. Small cable work and heatshrink applications — quick heatup and visible status help you work efficiently and safely. Key specifications and functions (as supplied): adjustable temperature 220400 degrees Celsius; DC5.5*2.5 power jack; DC 12V–24V lowvoltage input compatible with lithium batteries and laptop power supplies; 65W power output with fast heating; transparent housing to view the heating indicator light.