Meet the FanFlare: a wearable LED display you can use to put on a show during sporting events or simply display your name or business information. In stadium mode, the display flashes fast or slow, depending on the noise you are making. The device lasts for up to 8 hours on a full charge:
This wearable device shines 4 times brighter than your phone. It can be useful for parties and meetings. You can find out more about it here.