Panel type TN panel screen ratio widescreen 16:9 interface type USB, HDMI, AV, headset connection Brightness 300cd / m2 scanning mode point by point scanning maximum resolution 1366 * 768 operating system no additional function of operating system ground digital signal receiving nominal contrast 1200:1 optimal viewing distance 1.1m (including) - 1.4m (including) packaging size 15 / 17 / 19 / 22 energy efficiency grade I network connection mode does not support screen brushing rate 60Hz number of speakers 2 receiving system PAL NTSC SECAM packaging list base, remote control, manual... Gross weight 2.5kg, working voltage (V) 110-240V, DC12V certificate type CE certification power supply (W) 10-15w video display format 1080phdmi interface quantity 1