With the exception of the colors, the eXplorist600 looks exactly like the rest of the eXplorist product line...I highly recommend that you do this to save battery life...The eXplorist600 is sealed to IPX-7 specifications, this means it will not suffer from a dip in the water...
The eXplorist 210/500/600, check for latest discount prices ( HERE ), are about the size of a Garmin Vista/Legend-C and have the same size screen (16 Color Transflective for the 500 and 600 which have a very bright backlight) and USB connections...We upgraded the 600 Firmware from 1.61 to 2.03 -which causes the unit to report its version as "5.203...It is recommended...