... System 2.With monitors of 15",17",19",22" 3.Memory playing function, TV tuner 4.DC 12/24V Description and advantages ... Video System2.With monitors of 15",17",19",22"3.Memory playing function, TV tuner4.DC 12/24V Hard disk player specifications ... control number seven two 1.5V batteryWithout electricity memoryany state memory function in powerOutput power(MAX) power 4*45WVideo outputfour ways YPPR ...