Stay cool when you workout and turn the lights on when you run the road to keep you safe from cars. The Lightsaber Earphone uses the electroluminescent light wire and with high-end audio technology to deliver you extraordinary musical experience with elegant LED lights that dances with the beat of your music. The earphones also have built in microphones for hands-free phone calls. The Led laser lights changes in three different colors red, green and blue. So connect it with your smart phone and kill your exercise session.