What type of screen protector do you use for your Kindle Paperwhite? Do you think they are necessary? This tempered glass screen protector can block 90% of blue light between 380nm and 495nm, providing wide-range HEV protection, as well as Up to 99% high light transmission to restore the real scene with no chromatic aberration, and the 9H hardness and anti-fingerprint coating keep your screen clean while also providing protection against scratches and explosions. Do you often read on your Kindle for extended periods of time? Do you experience eye pain? The blue light emitted from electronic devices, such as the Kindle, can cause blurry vision, eye fatigue, visual fatigue, eye soreness, eye pain, and other diseases if exposure is prolonged. Protect your Eyes This blue light screen protector is designed to protect your eyes from the harmful effects of blue light. It features a layered anti-blue light design and multi-layer filtering of blue light, which can effectively block your eyes even if you use the kindle paperwhite for a long time. This will help reduce eye strain and prevent headaches. Protect your Screen The 9H hardness tempered glass screen protector provides superior defense against drops and scratches while also keeping your screen free from smudges, enhancing readability. Unlike the smooth screens of cell phones and tablets, the reader's screen surface is frosted, resulting in varying speeds of adsorption and the formation of large and small bubbles. Therefore, we recommend using a card to assist in attaching and expelling air during fitting. FQA Q1: What should you do if air bubbles occur during the installation of the tempered glass screen protector? A1: When you've cleaned the screen thoroughly but still get bubbles on installation . Firstly, Make sure the tempered film should be fixed well to the screen, then gently peel away the screen protector from the dispaly which has the sections with air bubbles, and reapply the screen protector with card. (the tempered screen protector should not need to be completely removed from the display, otherwise, the silicone adsorption layer more prone to attracting dust particles in the air.)Then, carefully lower the tempered glass screen protector and softly press the bubbles towards the outer edge using a cloth. If bubbles are formed when the screen is not cleaned properly, which leads to the accumulation of dust on the screen or tempered film. To address this issue, you can use the guide sticker to "stick" the air bubbles from the tempered film , then follow the mentioned steps to remove bubbles. Q2：What could be the cause if the tempered glass screen protector no longer sticks to the screen? How can we resolve this issue? A2:To begin with, the tempered film is equipped with advanced silicone adhesive adsorption layer that enables automatic attachment to the screen without excessive stickiness. However, it is crucial to make sure that dust and other particles do not stick to the adsorption layer while being installed. Therefore, when installing the tempered film, make sure to avoid touching the adsorption layer with your hand. Additionally, remember to thoroughly clean the surface of the tempered film to remove any dust. In addition, in the event that you come across a situation where the creen protector does not adhere, please don't hesitate to get in touch with us so that we can provide you with a replacement. FQA Q1: What should you do if air bubbles occur during the installation of the tempered glass screen protector? A1: When you've cleaned the screen thoroughly but still get bubbles on installation . Firstly, Make sure the tempered film should be fixed well to the screen, then gently peel away the screen protector from the dispaly which has the sections with air bubbles, and reapply the screen protector with card. (the tempered screen protector should not need to be completely removed from the display, otherwise, the silicone adsorption layer more prone to attracting dust particles in the air.)Then, carefully lower the tempered glass screen protector and softly press the bubbles towards the outer edge using a cloth. If bubbles are formed when the screen is not cleaned properly, which leads to the accumulation of dust on the screen or tempered film. To address this issue, you can use the guide sticker to "stick" the air bubbles from the tempered film , then follow the mentioned steps to remove bubbles. Q2：What could be the cause if the tempered glass screen protector no longer sticks to the screen? How can we resolve this issue? A2:To begin with, the tempered film is equipped with advanced silicone adhesive adsorption layer that enables automatic attachment to the screen without excessive stickiness. However, it is crucial to make sure that dust and other particles do not stick to the adsorption layer while being installed. Therefore, when installing the tempered film, make sure to avoid touching the adsorption layer with your hand. Additionally, remember to thoroughly clean the surface of the tempered film to remove any dust. In addition, in the event that you come across a situation where the creen protector does not adhere, please don't hesitate to get in touch with us so that we can provide you with a replacement.