... /520TVL/540TVL /600TVL/650TVL3,style:outering zooming camera,IR waterproof camera,vandalproof camera,IP camera,650TVL camera,hidden camera,mini camera,etc.4,Scanning system:PAL/NTSC5,Power ... quality warranty!8,With powful R&D ( including 5 PhD) and advance machines( 2 million invested in new machines per year ...