With the BlackVue Power Magic Pro, you can film from your car for long periods of time. Connect your BlackVue dash cam to the Power Magic Pro, and the dash cam turns off automatically if your car's battery doesn't have enough power. The time setting automatically turns off the dash cam after a maximum of 72 hours of filming in the parking mode. Moreover, the Volt setting turns off the dash cam once the voltage goes below the configured value. This prevents problems with starting your car once you continue your journey. The Power Magic Pro connects to the fuse box of your car.