wireless 3.5 inch portable lcd monitor 1,DC12V OUT jack 2,Antenna port ,3,BNC IN jack, 4,USB 5pins DC in jack 3.5 INCH wireless ... portable 2.5 hrs continuous operation LCD CCTV monitor Picture Advantage:1 ... Weiguan Maintain Dept. identifies it was damaged with intention. Wireless 3.5 inch Portable 2.5 hrs continuous operation cctv test monitor