AKASO Wireless Security Camera System Video Surveillance CCTV NVR Wifi Kits, 4CH 720P (1280 x 720) Auto-Pair Plug&Play 65ft (20m) IR Night Vision P2P IP66 Weatherproof Outdoor IP Camera NO Hard Drive

NVR specification: 
Operating System: Embedded linux OS 
Video resolution: 4ch 720P(1280 × 720) HD NVR with built-in Router 
VGA & HDMI outputs up to 720P & 4 channel sync-playback. 
HDD: Support 3.5 inches SATA HDD up to 4TB 
Power: DC 12V2A 
Power Dissipation(excluding HDD) <= 5W 
Working Temperature/humidity: -10℃-55℃(-4℉ to 131℉)/10%-90% 

720P Camera Specification: 
Image Sensor: 1/4'' Color CMOS.
Style: bullet ip camera, IP66 weatherproof.
3pcs infrared LED arrays and 3.6mm lens, IR distance range up to 65ft (20m)
Video resolution: 720p(1280 x 720)
Working temperature/humidity: -10℃ to +50℃(-4℉ to 122℉)/30% to 80%RH.
Power Dissipation: ≦6W
Minimum Illumination: 0 Lux (IR On)

Box includes? 
1x 4 CH 720p HD NVR without hard drive 
4x Wireless 720P HD Weatherproof Night Vision IP Cameras 
1x 12V 2A Power Adapter for NVR(3.3ft) 
4x 12V 1A Power Adapters for Cameras(3.3ft) 
1x 3ft Network Cable

Troubleshooting:
â‘ It only supports 2.4Ghz router, not supports 5Ghz.
â‘¡Not included HDD in the box so it recommded that you can buy 3.5inches 1sata 320GB-4TB, Western Digital, Seagate HDD.
â‘¢Please noted that this is not a battery operation system. And the camera and nvr needs power adapter in the box to plug in the electrical outlet.
④Wireless system did not mean you can use without any cable but you still have to use power cable to power on the camera and nvr and ethernet cable to connect nvr and router if you want to remote view. 
⑤This system is 4 ch camera system, not compatible with more camera.