Originally Posted by Blossom
This may explain the clicky noise I get when I touch the bezel on the top left.
I don't think the back is metal it's plastic with a finish that feels like metal.
I hate how the back feels but I plan to get a Decalskin to fix that.
The Bezel has nothing to do with my screen's contrast. I've already tried the black construction paper and it still can't be compared to my K3.
I've been wondering about the back and the outer surround (part just outside of the bezel. I noticed yesterday that the outer edge is much colder to the touch than the Page turn buttons. And so is the back. (I think the buttons are plastic for sure.) I wonder if they might be aluminum. I tried placing a refrigerator magnet on the K4 but it doesn't seem like the case is magnetically attractive. But if it is aluminum I would not expect it to be. I tried to find the disassembly video but haven't located it yet.