Here are the spec's on the 788.

788c Combo
788ci Combo

$649.99 MRP


5” TFT LCD
640v x 640h
Temp included
Speed capable
DualBeam PLUS 200kHz / 20º 83kHz / 60º
500 Watts RMS
4000 Watt PTP
Dual SD card slot
3 “soft-key” preset buttons
GPS (internal & external models)
Navionics compatible
Quick Disconnect Mount
Optional in-dash mounting