These have got to be the smallest earpieces I’ve ever seen, the micro earpieces slot into your ears and are near invisible.
I’m pleased to say all models are wireless (having an invisible earpiece with a wire dangling from it would have kind of defeated the object). Communications is via Bluetooth or an inductive coil that you wear under your clothes.
They may be small but they’re certainly not cheap with prices starting at over $200. More info over at wintec, thanks to fellow gadget enthusiast MystD for the heads up on these tiny devices.