Their design approach is "an electric backpack helicopter with a self-leveling autopilot," they write. "The lightweight airframe is constructed from carbon fiber honeycomb."
I have no idea how heavy that thing is to wear while you're on the ground, but it's striking how easy they make flight look. You'll also notice that they do actually show the take-off and landing, and it appears super smooth:
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At press time there was virtually no information on CopterPack's website, and the video had far fewer hits than you'd think (less than 250k). CopterPack has clearly found talented engineers; next they'll have to find some capable marketers.