Both. I don't use my belt when just driving locally so the seat belt chime was annoying and I stop by my storage unit a lot and I don't shut the car off but need the keys to unlock it and walking over to the unit to do so makes the car spaz out lol. Plus it's annoying when I run into the convenience store and the car is out there shrieking about the key. Of course, that was mitigated substantially by unplugging the external buzzer by the radiator. I just noticed then that the chime also buzzes with it.