Hate having to reset your automobile's on-board computer settings and codes every time you need to replace the battery?Well now you can go ahead and change it worry-free with this 12V Automotive Settings Keeper. This convenient accessory will keep your personal settings and is very easy to use. All you need to do is plug it into your 12-volt cigarette lighter. The included 9V battery connects to the plug and then retains your vehicle's on-board computer data. Order the 12V Automotive Settings Keeper today!