It has an indent in the screen from getting smushed between my triple tree and the bike frame. A screen protector over it keeps the screen waterproof. The power button just disappeared into the unit tonight, but I can still turn it on/off by the button. I'm not sure how that affects its waterproofing, though. I've replaced the battery before. It has City Navigator North America on it. It has a 12v DC powered mount with a RAM ball.
I'm giving this away and do not want to put forth any effort to do so.
I'll take it if you don't mind. The screen on my 680 is near unusable and a quick search says the features on the 680 over the 600 are features I never use.
I think the next time I'll be there is sept 27. My kid will be performing at Martinsburg HS. I can meet you somewhere in the morning or you can put it on a chair under the table if you're bored and looking to get it out of your house.