Sorry if this is a dumb question. I've looked around and can't find an answer to this question. DOES THE 899ci HD SI COMBO ALSO HAVE DOWN IMAGING? The picture of the box shows the DI symbol on front, so I assume it does. I'm having a real problem finding info on the 899 unit. Any help would be greatly appreciated! I have a hummingbird that's about 6 or 7 years old. Time to upgrade!! THANKS!!