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 protect their screen from scratches, cracks, and other damage.