iBlinks are a noise isolating ear buds that have a patented audio-optic technology that causes LED lights on the outside to flash to the sound output of any device with a 3.5mm jack. The volume level controls the brightness of the flashing lights. The unit comes with a built-in rechargeable lithium ion battery with USB charging cable. Interesting idea, but I’m not sure why I’d really want yet another device that require charging. They are available in different colors and are priced at $29.99.