["Multi-function Cleaning Kit: 3-in-1 cleaning kit containing a flocking sponge soft brush and metal nib its very easy to clean dust or stubborn dirt leaving your headphones as good as new" How to Use: Push-pull double-head hidden design the operation is very simple find the middle button gently push up and down can be used "Efficient cleaning: The cleaning pen has sharp metal teeth that remove dirt from hidden cracks and holes. The soft sponge can absorb fine dust inside the charging case of wireless headphones. The high-density brush makes it easy to clean dirt from the earphones sound hole" Portable and Slight: Small and portable it takes up no space and fits perfectly into a pocket or bag for easy travel or daily use Wide Application: Suitable for bluetooth earplugs earphones mobile phones computers keyboard cameras and other electronic products]