How eager are you to calm down (or psych yourself up) at a moment's notice? If the answer is "enough to buy a fairly expensive gadget," your solution is now within reach. Thync has launched its namesake mood-changing wearable at the hefty price of $299. That's a lot to pay simply to feel different, but the company is betting that its funky, triangular neurosignalling device is just the ticket if you tend to be stressed or lethargic at inopportune moments. Use the phone-controlled device and it should either relax or revitalize you for up to an hour, with "carry-over impacts" lasting for hours longer. The hardware worked well enough in our early hands-on, so it might be worth giving Thync a shot if you're often out-of-sorts -- it may well beat drinking coffee or beer to achieve the same effects.