fine tool for electronics, computers equipment, watch repairing and other craft projects. Adjustable Temperature: 300-510℃ temperature adjustable, you can set the desired value to meet your soldering needs. New Design: Latest heat dissipation handle design, comfortable hand feeling for long term use, patent tail handle line pressing design is more secure to solder. Digital Display: digital display can shows the real time temperature clearly. Easy Installation Tips Design: Easy to install and replace the tips, time-saving and efficient. Lightweight and Portable Size: You can starts soldering anywhere at any time without feeling fatigue for long period of operation. Longer Lifespan with Fine Quality: Heat-insulated and antislip bakelite handle provides comfortable and secure operation. How to use: Press and hold the "'" button for 2 seconds to turn on/off Press the "'" button once after power on to increase the temperature by 10℃. Press the "-" button once to lower the temperature by 10℃. 4.0AH battery use time about 6 hours. 3.0AH battery use time about 4.5 hours. 2.0AH battery use time about 3 hours 1.5AH battery use time about 1.5 hours. Standby time 10 minutes automatic shutdown. Note: Please do not touching the soldering tips metal part when the power is turned on. Please turn off the power when resting between usage or finished soldering. Specifications: Name: Electric Soldering Iron  Power: 60W Material: Plastics'metal Temperature Range: 300-510℃ Temperature Stability: ±10℃     Heating Type: Internal Heating Soldering Nozzle: 936M Series Package Size: Approx. 250 * 100 * 100mm / 10.24 * 3.94 * 3.94in Package Weight: 350g / 12.35ounce Packing List: 1 * Electric Soldering Iron