Covert Systems' Micro DVR uses MPEG 4 compression at 30 FPS. It weighs 190 grams with 2 Gb of internal memory expandable to the latest SD technology. The internal 2.4-inch TFT monitor allows for quick review of stored video and audio. With a built-in microphone, officers can add their favorite 5 Vdc buttonhole camera. The image format is 320 by 240 in full color.