Greg Harper opens his bag of gadgets to show to Walt and Kara.
This gadget maniac travels the world collecting the coolest.
Gadgets large and small!
Bad breath checker.
A look inside Greg's bag of gadgets.
Greg Harper on the D7 stage.
Sony music player with an OLED screen.
But can it make sliced bread, asks Walt.
Okay, what's next?
An iPhone knockoff from China.
Refresh your eyes!
Time to go underwater.
Greg Harper of HarperVision.