SVD 21.5-Inch Professional Security Monitor With BNC VGA Audio Inputs and BNC Audio Outputs and Build-in Speakers for CCTV Home and Office Surveillance Secure System 450TVL, SVD Advanced Security Support multiple input signals: analog (composite & VGA) video inputs, HDMI, USB and BNC input. 50,000 hours life span is perfect for professional non-stop security monitoring: 365days 24/7. VESA mount capability offers you the choice to wall mount and removable and adjustable base offers you viewing comfort. High resolution, better surveillance: VGA with 1920 x 1080, BNC with 700 TVL. 100% satisfaction: We offer 30 days money back guarantee.