Product Description Resolution: 1366 × 768 FHD Power： DC12V, USB 5V ((The usb interface does not support direct connection to the laptop power supply, you must use the 5V,2A power adapter to connect the power supply) Input Signal: HDMI-1 HDMI-2 Consumption: 10W Built-in speakers :YES Operation Mode: the Key operation Contrast: 800:1 Brightness: 250cd/m2 Backlight: LED Response time: 5ms Working temperature: -0 ° C ~ 60 ° C Weight: 685 G Working voltage: 5-12V Refresh rate : Support 60hz. (Does not support other high refresh rate devices, such as 120HZ, etc.) Control mode: Multi-function OSD operation or Adjust brightness and color by menu OSD language: Simplified Chinese, Traditional Chinese, English, Japanese, Korean, Spanish, French, German, Italian, Portuguese etc 1) Press “Down” button at the first click on the back of the monitor button. 2) If you want to increase the brightness, press “UP” to set the desired brightness. 3) If you want to decrease the brightness and press “Down” button continuously, the brightness will be decreased. 1) Press “UP” button at the first click on the back of the monitor. 2) If you want to increase the volume, press “UP” to set the desired volume. 3) If you want to decrease the volume and press “DOWN” button continuously, the volume will be decreased. Dimensions: 325*195*14mm (L*W*D) Weight :685g How to connect the display: 1) Using the supplied DC power cable, connect to the DC connector of the monitor and supply power to the monitor,If you supply power to the monitor via USB port, you must connect a USB UK power supply adapter that meets (5V, 2A) 2) Connect the monitor to the device using the supplied HDMI cable; HDMI is a signal transmission interface. Note 1. If the power supply to the monitor is DC only and HDMI is not connected, “No Signal” will be displayed. 2. If only HDMI is connected and no DC is connected, the monitor will not be powered and the screen will be black. 3. Please note that connecting the monitor’s USB port directly to the laptop’s USB port to supply power will result in insufficient current. 2A or less will cause the monitor to enter power saving mode if insufficient current is supplied. Note: To get the aspect ratio right, be sure to set the device resolution to 1366 x 768, otherwise the picture is a bit more square (width compressed). And you can get best image quality . 1). Right click your mouse on the computer screen and select Display Settings. 2). Click on “Resolution Settings”. 3). Select a resolution of 1366*768 The package contains: 1x 14 inch portable monitor, 1x HDMI cable, 1x Metal Stand , 1x DC power supply , 1x Manual for English