... support 4096*4096 resolutionSpeakerYesInterfaceOTG digitalSupport Harddisk,digital Camera,Mobile,USB,card reader and able to connect printer ect ... screen output to HDMI DevicesUSBUSB2.0HOSTHOST1.1 connect with mouse,keyboard,USB diskChargingsmall type charging port,DC9V inputEarphone/Video3. ... 4V lipo batteryplaying time 8 hour music for music, with earphone 6 hours above for video,HDMI output playing ...