Because the screen of this machine is an electronic ink screen and the screen is frosted, there will be air inside the toughened film just after it is pasted. But it doesn't matter, as long as it is stuck for about 3 days, the air inside will disappear automatically. Protect your Bigme Hibreak Pro e-reader's 6.13-inch E-ink display with this premium 3-pack of tempered glass screen protectors. Specifically designed for precise fitment, these HD clear protectors maintain the crisp, paper-like clarity of your E-ink screen while providing reliable defense against scratches and impacts. The high-transparency glass preserves touch sensitivity and doesn't interfere with the device's functionality. Each pack includes three protectors, giving you spares for future use or replacement. The tempered glass construction offers superior durability compared to standard film protectors, while the oleophobic coating helps resist fingerprints and smudges. Installation is straightforward with the included cleaning supplies and guide. These screen protectors feature precise cutouts for the front camera and sensors, ensuring all device features remain fully accessible. Keep your e-reader's display pristine and protected with these custom-fit glass screen protectors.