Expertly designed to enhance your computing experience, the JOHNWILL 13.3" Portable Computer Monitor boasts a 16:9 display ratio and a 1366 x 768 resolution. With a solid TFT panel, this monitor offers a wide 155° horizontal viewing angle and an 85° vertical viewing angle, making it perfect for desktop use. It also features a brightness of 250cd/m and a contrast ratio of 800:1 for optimal image quality. With a fast 60Hz refresh rate and a quick 4MS response time, this monitor ensures smooth and seamless performance. Additionally, the built-in speaker adds a convenient audio solution for your convenience. Enjoy the benefits of exceptional productivity with the JOHNWILL Portable Computer Monitor.