As always, CES is home to a treasure trove of tech products — some of them cool, some "meh," some just plain bizarre. (I'll never forget the WheeMe rolling robotic back massager of a few years ago. Shockingly, that never made it to market.)

As the Mashable team scampers around the Consumer Electronics Show ( CES) in Las Vegas this week, there's one question that's top of mind every time we visit a booth or attend a demo: "That's cool, but when can I buy it?

From smartphones to smart glasses, here’s everything announced at this year's big tech trade show that you can actually order—or preorder—today.