See detail @ http://www.amazon.com/gp/product/B000W6POQW?&tag=externalharddrives0a-20 The STEALTH1 is an easy to use, covert DVR system that can be used wirelessly to secure your business or home. It is ideal for monitoring your office, home, employees, loved ones, and valuables. The unit is disguised as a motion sensor and includes both a DVR and pinhole camera. Record MPEG-4 video directly to the included 2GB SD card. Supervise your business or home completely undetected with the STEALTH1 and always be aware of what is happening, even after-hours.