I dont have the 522igps, I have the 520c which is the same unit without the internal GPS....The reason being is that I have read a few reports about this units internal GPS being finicky. I Chose instead to buy the head unit (head unit only, no transducer or GPS) ($366 Ebay), a Blue Genz Box ($20 ebay), a Vexilar Float($5 ebay), Ice Ducer ($70 ebay). Shipping was $25 al together. Already had the Battery and Charger (which it said you have the charger, new batterys local to save shipping if needed) I have a hand held GPS, so it wasnt that important, and can always buy the puck unit later. So Right now Im under $500. I got lucky and found a trolling motor transducer for very cheap on ebay ($25 shipped) for my summer fishing.