Just some quick pics of my newest arrival, the black GW6900! Loving this one, will definitely take up a lot of time in the regular rotation.
One thing I immediately noticed is the straps are different on the watches. The white one is a bit wider by the bezel, and just a bit bigger for the rest of the strap. The black one has 2 ribs/notches in the strap while the white one only has one. The black one is definitely softer and more pliable.
If you have questions, please ask!