For OPPO A54 4G IMAK 9H Surface Hardness Full Screen Tempered Glass Film Pro+ Series 1. Ultra-thin and excellent flexibility, you do not have to worry about the device response speed will slow down after sticking the protective film. 2. High hardness: This toughened glass film has high hardness, so it can prevent itself from being scratched or broken. If it is damaged, the toughened glass will be broken into small pieces that are not sharp to ensure user safety. 3. High definition: This protective film has high light transmittance. With high light transmittance and low light reflectivity, the screen can still maintain high definition after using the protective film. 4. Function: The protective film can accurately fit your device screen, and can protect your device screen from scratches, fingerprints, water, oil, dust, vibration, sliding, etc. When it is contaminated by water, soil, oil or other attachments, it can be easily cleaned. 5. Smooth surface: Even the edge of the protective film is very smooth. 6. Convenient to use: It has super adhesion. Before sticking the protective film, all you need to do is to clean the screen thoroughly. 7. Durable: With good performance, it can be used for a long time. Installation notes: 1. Please use alcohol swabs and microfiber cloth to clean the screen of the device before installation. 2. Peel off the protective layer on the adhesive side. 3. Carefully align the glass film with the screen. 4. Press the center of the glass film and the adhesive part will spread out smoothly. Reminder: 1. Since this is a glass product, please note that the edge of the glass is a fragile area. 2. When disassembled and reused, the sticking performance may be reduced, and it can no longer stick to the equipment. Therefore, it is recommended not to reuse the protective film. 3. Excessive force when installing or removing the screen protector may damage the product. Note: The specific model is subject to the model in the title, which is more accurate.