I be a avid Magellan user . I have a business in which I need to be navigate to different location everyday , and have buy at least 2 Magellan GPS ' in the past . I crack the screen on my last one , and need a new one , and decide to try Amazon to purchase my next one . -lrb- I be also a avid Amazon user . -rrb- this gp be purchase for a cheaper price , supposedly not use or refurbish , brand new , and in the box . it arrive on time , and work seemingly as it should for about 4 day . after that , every time I attempt to enter in a destination , a screen pop up that read `` you device need to be restart to increase it be performance . '' all of a sudden , I have a brand new gp that would not allow I to put in a destination . it let I enter HOME however , which suck cause I usually know how to get myself home . but as for my business purpose , which be what I buy it for , it be useless . I now have a $ 160.00 piece of machinery that do nothing but sit in my windshield view and make I very angry whenever I drive , because I be look at Google Maps direction , instead of a gp . I would not recommend this seller . at all .