The Personal Cooling System, created by Sharper Image Design, houses a patented, miniature evaporative-cooling system. You fill it with water, place it around your neck and switch it on. A quiet motor drives a tiny fan that creates evaporative cooling; flexible sides hold aluminum cooling plates against your neck ,Aei and your entire body enjoys up to four hours of relief. What's more, the fan inside adds even more cooling by directing a gentle breeze over the back of your neck.

This jewel even comes with 2-oz. water bottle for on-the-go refilling. I'm really not sure I'd venture in public wearing this air-conditioner necklace. Even if it looks better than the cooling gloves.
Via idgrid.