The 6.1 cm (2.4 inch) [36.98 x 49.29 mm] measurement is the screen size of a specific device for which our website sells a range of screen protectors. This measurement is important for customers to know as it ensures that they purchase the correct size screen protector for their device. By providing this information on our website, customers can easily find the right screen protector for their device and ensure that their screen is protected from scratches, cracks, and other damage.