Night Owl E-1681TB-4DMA 16 Channel 960H Elite Series DVR with HDMI, Esata, SmartPhone Remote Playback/Viewing, Push Alerts, Streaming Audio, 1 TB HD, 8 x 600 TVL Night Vision Cameras, 4 Indoor Dome Cameras (6 Audio Enabled Cameras & 100/50 ft NV) and free Night Owl Pro App 16 Channel Smart DVR with pre-installed 1TB hard drive 8 x Outdoor 600 TVL cameras with 100 ft. night vision (2 with audio) Bonus 4 Black Indoor Audio enabled cameras included (50 ft. of night vision) Stream Audio and Video directly to your Smartphone/Tablet 24/7 Phone and Web support