Zoom-in and get even more clarity on the 4.3" color high 30' range from each of the two weatherproof cameras included Up to 500 foot wireless transmission range Up to 40 foot motion detection/night vision range Includes the auto-save feature, so you won't waste any of your rechargeable 4.5- hour battery The Uniden UDR444 digital wireless surveillance video system is easy to set up right out of the box, and allows you to safely monitor your home or office, even in the darkest and wettest of conditions. View images discreetly from 500-Feet away on the 4.3-Inch portable high-resolution color monitor. Each camera features a 30-Feet range and built-in microphones so you can capture both video and audio. Record while you're away either by setting a recording schedule, or by allowing the system's motion sensors to keep on the lookout. The MicroSD card allows you to watch up to 16 hours of recordings, or you can watch live coverage remotely via Skype, or by using the USB port on your PC.