1. Soft density bristles and keycap buckle The density brush with soft bristles delivers effective cleaning in keyboard gaps and monitor bezels without scratching surfaces. The keycap buckle lets you remove keys easily for a more thorough cleaning; note: the buckle is compatible with mechanical keyboards only. 2. Features: multifunctional cleaning set Includes: a siliconetip cleaning pen, a mini brush, a flock sponge brush, a density soft brush, an empty cleaning bottle, a microfiber fleece wiper, and the key cap buckle. The kit is suitable for cleaning headphones, keyboards, PC monitors, phones, cameras, and other electronics. Use scenarios: Clean a mechanical keyboard or laptop keyboard: use the key cap buckle to remove keys and clean under and between them. Refresh headphones and accessories: use the siliconetip pen on ear cushions and face pads; the mini brush cleans mesh and crevices; the flock sponge handles charging housings and hardtoreach dirt. Clean screens and devices with precision: wipe screens, lenses, and surfaces with the microfiber wiper and soft brush to remove dust and smudges. 3. Foldable cleaning pen The foldable cleaning pen features a silicone tip for removing dirt from ear cushions; the mini brush cleans grills and mesh; the flock sponge addresses dirt in charging housings and other tight spots. With a single cleaning pen, you can refresh and maintain your headphones and related electronics efficiently.