I have a Garmin GPSmap 498. It comes with transducer w/temp., AC/PC adapter to communicate with PC, Software for PC. It is a really good unit. I have 436 points on the GPS. All the points came from Mark Wisch book "Between 2 and 20 Fathoms" It also has some spots over in Catalina. I paid $500 for GPS alone plus $60 for AC adapter and another $30 for the software. I'm asking $350. Call me if you have any questions. (626) 393-9110.