Thync is launching its mood-altering headset today, letting you find a state of calm or boost your energy with controls on your smartphone. Thync’s gadget is more of a module than a headset. It’s small, plastic, and contains a Bluetooth radio for connecting to your phone. You attach it to a disposable adhesive strip, which you apply to your temple and neck. Kyle Russell demos Thync’s new mood-altering wearable.