The 6.9 cm (2.7 Inch) [58 x 33 mm] is a measurement for the screen size of a specific device that our website sells screen protectors for. This measurement is important for customers to know so they can ensure they are purchasing the correct size screen protector for their device. Our website offers a range of screen protectors that are specifically designed to fit this device, providing customers with the peace of mind that their device is protected from scratches, cracks, and other damage.