wireless and portable this smart portable battery operated monitor display box screen is perfect for outdoor car truck and other mobile vehicle applications as it is equipped with a built-in rechargeable 3.7 volts lithium battery with 2 500 milliamp hours capacity nine inches high res widescreen the pile tv tuner monitor display features 9-inch tft lcd high-res display with 800 by 480 pixels resolution 16 to 9 aspect ratio and measures 9.1 l by 7.0 w by 1.3 h enjoy high quality sound with the built-in dual stereo speakers 5 inputs the digital monitor features ap input usb port and micro sd memory card slot supports up to 32 gigabytes 12 volts dc power input port for mobile vehicle and external antenna port the tv supports both atsc 1 analog and digital television receiver usb plus micro sd readers the mini television supports multiple digital formats such as jpeg bmp and png image files