Q-see QC40108-441-5 8 Channel 10" Integrated LCD Screen Security System 4 600 TVL Bullet Cameras 10-inch LCD Observation Monitor 8 Channel DVR integrated into the slim LCD monitor Pre Installed 500 GB HDD Remote internet monitoring (up to 10 users at the same time) Mobile Phone Surveillance Compatible with MAC and PC Customize up to 4 additional cameras when you need, 1 Year Warranty 600TVL Resolution Weatherproof cameras for indoor or outdoor use 120 feet of night vision 1/3enhanced infrared cut filters offer high quality images and accurate colors in the day or night. Operating Temperature = 14F to 122F (-10C to 50C)