Review on Advanced Humminbird 440440-1 688ci HD Internal GPS/Sonar Combo Fishfinder (Black) - The Perfect Fishing Companion! by Antonio Lofton

The screen is very bright at night almost ruined my ability to see at night on a lake I didn't know very well but had a very accurate depth reading. I would give more stars but only used it briefly. Works great and I would recommend it to my friends. I've been using this item for a while and I love it. The navigation feature can be a bit tricky at first, but it gets easier. This thing is very sensitive to the fish and the structure underneath. I bought 2 more, one as a gift and the other for the front of my boat.