Amzer Kristal Clear Screen Protector Guard for Samsung Galaxy Ring M840, Samsung Galaxy Prevail 2 M840 - Retail Packaging - Clear Reduces glare, scratches, and smudges and improves clarity Heavy duty screen protector. Once applied to the Samsung Galaxy Ring/ Prevail II SPH-M840 does not slide or move. Comes with a cleaning cloth and a plastic card to help you apply the screen protector. Features: Bubble-Free Application, Anti-Reflection Screen, free from Fingerprints, and dust repelling.