Wookiwuki HD Tempered Glass Screen Protector Compatible with Samsung Galaxy M13 Compatible Model: Samsung Galaxy M13 Material: High quality tempered glass Thickness: 0.33 mm [9H scratch resistance] Features: 99% HD clarity and touchscreen accuracy. This Samsung Galaxy M13 tempered glass screen protector provides protection for the screen of your mobile phone without compromising the overall aesthetic of your mobile phone and does not add any burden to your mobile phone. How to use: Clean the screen of the phone thoroughly with damp and dry wipes before installation. Then clean the phone with the dust-absorbing sticker to remove the dirt from the screen. Peel off the protective layer (with tab) from the screen protector before applying it to the phone. If there are air bubbles, use a squeegee or hard plate to press the air bubbles from the center to the edge of the phone display. What you get: 3 x screen protectors. 3 x wet wipes. 3 x dust stickers. If there is a problem, please do not hesitate to contact us. We will solve your problems within 24 hours.