With the Settings Saver, you'll never lose the settings in your vehicle's radio or on-board computer ever again! Simply plug the Settings Saver into your vehicle's 12V power outlet to keep 9 volts of electricity in your vehicle's system - enough to prevent the resetting of radio presets, clocks, and computer settings when the battery dies or is replaced. Perfect for vehicles being stored or when you need to change a battery.
Includes 9V Battery