This advanced tempered glass screen protector offers triple protection, certified to 3 protection standards, making it 3X stronger, scratch-resistant, and providing high protection. It has been tested with a 110 lb pinpoint force test, a 10,000X scratch test, and a 6-ft ball drop test, ensuring shatter resistance and impact protection. The screen guard features 9H high hardness, is fingerprint resistant, offers high transmittance, and is waterproof. It is designed for edge-to-edge coverage with big curved glass, ensuring a zero-bubble installation. An installation guide is included for a bubble-free application. This screen protector is specifically compatible with the Oppo F19s.