R-Tech RTSK7204HV04 Surveillance Kit with 4 Channel DVR and 4 Bullet Cameras (Black/Silver) 4 CH Real-time Recording and HD Playback H.264 Dual-Stream Video Compression 500GB HDD Included 4x 520TVL Outdoor/Indoor Cameras 3.6mm Fixed Lens and 24 IR LEDs up to 50ft Distance