The iGlō Pulse headphones pulsate to the beat of your music using fiber optic technology. Just plug it into your phone or MP3 player, press the sync button and watch the luminescent lights glow to pulsating music. What if someone calls you while you’re listening? All you have to do is press the button on the headphones to switch to the built-in microphone and answer the call. The iGlō Pulse are available in green or blue from Amazon and cost about $24.95.