"Composition" The three-in-one multi-function cleaning pen consists of three cleaning parts: a metal nib, a short-haired cleaning soft brush, and a flocking long brush "Metal Nib" is used to clean the stubborn stains in the earphones and mobile phone keyboards that exist in the gullies or holes, and thoroughly clean the gaps "Short-haired cleaning soft brush" high-density fine-bristled brush, easily brush out the stains that exist on the edge of the earphone earpiece groove, and thoroughly clean the dust and stains in the corners "Flocking Long Brush" High-quality, delicate, soft and fluffy flocking long brush, designed for cleaning the inside of the Bluetooth headset box "Summary" 3-in-1 multi-function cleaning pen, easy to use, has a good grip, easy to clean the small dirt and dust in various digital products such as earphones and mobile phones. The product is exquisite in workmanship, and it is a good choice for yourself and your friends