Portable: small, can be carried around, suitable for travel. 6 in 1: Silicone cleaning pen tip, mini brush, flocking cotton swab, keyboard cap clip, keyboard brush, microfiber polishing cloth. Suitable for: clean earphones, earphone charging bin, monitors screen (mobile phone, tablet, computer), clean keyboard and mouse, etc. Cleaning and maintenance: The product does not contain screws, can be washed and cleaned directly with water, dry, and then used normally again. High quality: The brushes in this brush set are made of high quality materials, wear and strong, and can be used for a long time.