GOLEBO 6X Anti-Glare Screen Protector for Polar M400 / M430 (Anti-Reflex, Air Pocket Free Application, Easy to Remove) Anti-reflex screen protector for Polar M400 / M430 - anti-reflective screen protective film with long-term protection for Polar M400 / M430 - it increases the readability of the display under strong light sources such as sunlight It protects from dust and scratches - you can avoid fingerprints and dirt with the Polar M400 / M430 screen protector Should it not work at once, you can apply again the Polar M400 / M430 screen protective film. Please use the information or video assistance provided You can read the display much better with the Polar M400 / M430 screen protective film, since the film affects anti-reflective and anti-glare Guaranteed 100% air bubbles free - easy application of the Polar M400 / M430 film - on the back of the package we explain step by step how to use the anti-scratch. A video of installation is available for assistance