The DVM-500 Plus upgrades the DVM-500 In-Car Video System Integrated into A Rear View Mirror. It features an ultra-bright 1000 Nit Monitor for easy viewing in any condition (and can still turn invisible). The new electronic locking door with pin code access keeps recorded evidence even more secure. An internal backup battery provides up to 30 minutes of operation in case of power loss. The DVM-500 Plus continues recording to solid state memory and includes integrated GPS with “mark” feature, pre-event recording for 60 seconds before activating record, and more.