1. Used for motherboard maintenance and inspection.2. Small size, easy to operate 3.No Soldering Iron Needed 4.Built in battery,rechargable.Instructions for use: 1. Make the rosin block into small pieces.2. Use the rosin block tool to take a small piece of rosin and put it into the rosin block atomizing pen. 3. Quickly press five to start the rosin block atomizing pen. 4. Press and hold the rosin block atomizing pen to preheat for two seconds.5.It can be used after smoke.size: 10 x 5 x 3cm Material: Plastic colour: As shown Package Contents: 1 x bulb nebulizer 1 x data cable 1 x rosin spoon 1 x battery pole 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.