I've had my Jensen for about 6 months. I've never had an issue with the functionality of the unit and does everything that I want. Although it is not mentioned that the GPS maps installed are only for the U.S., the Canada maps are readily available, but a bit tricky to get. Overall, I like the unit very much as it has enough volume to drown out any exterior (or interior) noises without the use of an extra amplifier. Great product.