Morimoto LEDRING-60XSB White/Amber 60mm LED Switchback Angel Eye Ring, Pair There are Patent Pending micro-mounts integrated into their backing, making the XSB's the easiest and cleanest rings on the market to install The innovative Hybrid-LED technology delivers a virtually infinite lifespan of 50,000 hours. That's almost six straight years! A special blend of silicone and phosphor covers the face of each ring. This proprietary coating is responsible for the neutral "white when off" look of the XSB's and their amazing, uniform intensity Though they come out of the box ready to run as a switchback system, the XSB halos can easily also be wired for use as a white-only or amber only halo if that's what you want too