Product DescriptionMJPEG 4Channel Mobile DVR VVS-MDVR5004 Features: 1. Aluminium alloy structure, easy to radiate heat; Lightweight 2. High strength shock-resistance capability 3. MJPEG compression 4. High resolution picture quality 5. Record modes: Motion detection / time schedule 6. Motion detection: Area selection & sensitivity adjustment for each camera 7. PC playback & backup via built-in USB 2.0 port 8. With auto switch display function 9. System self-recovery after power reconnected 10. Password protection 11. Audio record available 12. IR remote control included 13. Power output to supply cameras