... 3G mobile dvrThe total resources of 50 four-ching, two-way full-time real.Lu Ching, under four per arbitrary ... can be a single larger image.1-channel audio support, one way input and output, video recording synchronization.Selectable NTSC / PAL ... converter will be achieved. (Optional) Specifications: 8004HST (X) one-way, Road, three-way, four-way standard Size: 216mm X 196mm X 60mm Weight: 1 ...