the functions of the device are excellent, very good touchscreen and the Android version on it is well adjusted for the size of the screen. very recommended. my only negative star point, is the unusual size of the screen, it's higher than regular 1din head units allow so I had to do some manual cutting of the frame before it would fit. unless you know what you're doing, don't assume this is a regular fit for a 1din. but overall pleased with the purchase