I bought 2 x160c color fishfinders for my local boat shop . I have used them 5 times and every time I use them the screen goes blank . You have to switch it off and on again than they work for 20min and same problem accours . They do not hold there settings that have been programmed.So went back to my dealer who than phoned Avic trading agents for Garmin SA . They keep saying they don't have stock.So I asked for my money back. Avic Trading Garmin SA said ask your dealer.and he is saying he is getting no support from Trading Garmin SA. So now I have to buy another brand or wait for another month or longer for replacement. What now guys I paid my money for a product that does not work.