1、TECHNICAL PARAMETERS: The 4K portable display features a spectacular IPS Class A screen with 13.3in, 3840x2160 resolution, 400 nits brightness, 1800:1 contrast ratio, 100 percent sRGB, 178 degree wide viewing angle and 60Hz refresh rate. This travel display features HDR, low blue light, and for FreeSync. The exterior screen will display clear colors, vivid images, and clear details 2、MULTIPLE PORTS: The second display is plug and play, so you don't need to install any drivers to get started right away. This laptop expansion display offers 2 fully functional USB C ports and a Mini High Definition Multimedia Interface port, Let you connect to most laptops, for OS Xs, PCs, and more with just one USB C cable(a device with a full featured USB C port) or HHigh Definition Multimedia Interface cable and power supply 3、INCREASE PRODUCTIVITY: After connecting the second display to your device using a cable, the portable screen will work immediately, increasing your productivity and improving your gaming experience, making it an excellent choice for a second or multi screen 4、DUAL SPEAKERS AND HDR MODE: The laptop external display 2 built in speakers can effectively help display multimedia files, especially when listening to music, watching movies, playing games. HDR mode supports excellent mainstream transfer, allowing you to enjoy excellent video transfer in games and other entertainment 5、PRACTICAL GIFT: Portable monitors are great for working from home, remote working, traveling, online classes, gaming, and video conferencing, among others. Also has a very delicate packaging, so that will definitely make a nice gift to wives, husbands, teenagers, co workers, data coordinators and loved ones on the road during birthdays, All Hallows Day, Thanksgiving and Xmas Item Type: Laptop External Display Panel Type: For Oxide TFT-LCD Aspect Ratio: 16: 9 Refresh Rate: 60Hz Resolution: 3840x2160P Response Time: 6ms Color Gamut: 100 Percent sRGB Brightness: 400cd/m² Contrast Ratio: 1800: 1 (typ.) (transmissive) Display Colors: 16.7M (8 bit) Color Temperature: 6485K Speakers: 8Ω 1W Box x 2 Material: Aluminium alloy 1 x Display 1 x Supply Adapter 1 x USB Cable 1 x High Definition Multimedia Interface Cable1 x Type C Cable