Garmin echoMAP $100 Rebate
Purchase a Garmin echoMAP series GPS/Fishfinder before November 8th, 2015 and receive a $100 mail-in rebate.
The 5, 7 and 9 stand for screen size in inches.
If the second number is a 3 (odd number) - this implies it's pre-loaded with LakeVu Charts (Rivers & Lakes)
If the second number is a 4 (even number) - this implies it's pre-loaded with G2 Blue Charts (Rivers & Ocean)
In this product line:
DV= DownVu which provides traditional view sonar and down view structure imaging.
SV= SideVu which provides traditional view sonar + down view and side view structure imaging.