WONNIE 10.5" Two Car DVD Players Portable Dual Screen Headrest Video Player,
DC cable connect DC OUT (second port of main player) and DC IN of slave monitor. AV cable connect AV OUT of main player and AV IN of slave monitor. For DVD: CD, DVD, VCD, DVD+R(-R), DVD+RW(-RW), SVCD-R(RW), CD-R(RW).