Marcus Troy has posted some photos of his Mountain Dew limited edition DW-6900 that was designed by UPSO. These G-Shocks were given away as prizes as part of a big promotional giveaway several months ago. Not too many of these have shown up online. There is a few on eBay now, if you want to pick one up.

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Mountain Dew x UPSO G-Shock DW-6900