The 6.1 cm (2.4 inch) [36.98 x 49.29 mm] measurement is the screen size of a specific device for which we sell a range of screen protectors on our website. It is important to know the exact screen size of your device to ensure that you purchase the correct size screen protector. Our range of screen protectors are designed to fit this specific device perfectly, providing protection against scratches, cracks, and other damage to the screen. By choosing the right size screen protector, you can ensure that your device remains in pristine condition for longer, saving you the cost and hassle of having to replace it.