This is a review on the GB-5600AA-1JF
The review in one sentence: This is a fine watch by it self, good features great aesthetics and vibration possibilities, but the bluetooth features are of limited value by them selves.
Casio has entered the bluetooth watch business that really seems to have become popular with the kickstarter project Pebble and other such projects.
The GB-5600AA-1JF has a very familiar look to G-Shock fans, since it looks a lot like the first G-Shocks.
It has that red line around the display, and it has a brick pattern within that red line.