I give it 5 stars because it took me four other models that couldn't function as their specifications stated, meaning I asked for something with a suction cup and GPS, and I'm only referring to these two features. The Kenwood is the only one that actually worked in all conditions and serves very well. It has a good GPS signal and very easy operations, although they are in English, they are very easy to understand, and you can set it up in less than 5 minutes. It sticks and unsticks from the windshield in seconds so it doesn't always appear permanently in the car and cause the windshield to break. In general, it hasn't given us any problems with its functionality, even when it's detached from the car adapter. It has memory to keep the date and time without needing to set it every time