Specifications: 1) With professional mobile DVB-T LSI, the unit can make a good receiving at 250km/h maximum speed 2) Compatible with +12 and +24V power supplier 3) 4 AV outputs, 1 AV input 4) Easy for installation, applied for all kinds of cars and buses 5) Automatically compatible with all DVB-T standards 6) Considering the requirements of vibration, temperature, and power shock durability for designing 7) Supply aspect ratio 4:3, 4:3 full, 16:9 wide easily switching 8) Electronic program guide function to preview program list 9) 24 bits D/A for hi-fi audio 10) All functions with remote control