This rosin atomization machine is a very practical tool for detecting circuit board short circuit in your daily and work. You don't need to use an electric soldering iron, just with this tool, you can quickly detect the fault point. Come on and try it, it will not let you down. Features: Pen type design, comfortable for you to hold, give you a better using experience. Easy to operate: Put the small rosin into the machine, after preheating for two seconds, long pre to starts atomization to use, no need the soldering iron . Bulit-in lithium battery, you can recharge it in time for a long period of using time. You need to buy rosin separately by yourself to use together, this product NOT include rosin, please check before order. Small in size and easy to carry, you can put it into your tool box to storage and carry, you can share it with your families and friends. Specifications: Material: plastics Battery: 1 * lithium battery, 280mAh (included) Package size: 127 * 63 * 27mm / 5 * 2.5 * 1.1in Package weight: 90g / 3.2ounce Packing list: 1 * Rosin Atomization Machine Set 1)