The Cool Tech Cleaner is simply the best screen cleaner in the promotional market. It easily clears dust and smudges from your device without smearing. Keep it with you where it is easily accessible with the attached keyring. This is a great tool to keep your screen clean and clear. - Mop-like screen cleaning cloth|Attached keyring for portability|Retractable cloth to keep clean when not in use|Small size perfect fit for most pockets