The 30.7 cm (12.1 inch) [247 x 186 mm] is a screen size measurement that refers to a specific device that our website sells screen protectors for. This measurement is important for customers to know when selecting the appropriate screen protector for their device. Our website offers a range of screen protectors that are designed to fit this specific screen size, providing customers with the assurance that their device will be protected from scratches, cracks, and other types of damage. By offering a variety of screen protectors for this screen size, our website ensures that customers can find the perfect fit for their device and enjoy long-lasting protection for their investment.