Power Magic Pro BlackVue Vehicle Battery Discharge Prevention for Parking Mode for BlackVue DR500GW, DR550GW, DR650GW, DR650S Compatible with Dr3500, DR450, DR470, DR490, DR500GW, DR650GW, DR650S, DR750S Multi-booting, Cigar jack connection socket, For 12-24V Prevention to discharge Vehicle Battery, Prevention to Reboot Black box/Navigation Configuring the Voltage to Cut-off the Power, Configuring the Timer to Cut-off the Power Timer setting : 6hrs ~ Infinity, Semi-permanent fuse usage