FLASHPOINT PHOTOCHROMATIC TECHNOLOGY This is the bow sight that started the purple revolution. The originalFlashPoint PhotoChromatic is the first bow sight to automatically adjust pin brightness! FlashPoint’s PhotoChromatic shell automatically adjusts pin brightness by changing from clear to purple depending on the available light. Works just like light-adjusting sunglasses, but with the revolutionary SkyCoil™ technology, it is 300% more efficient at gathering light. One of the biggest innovations ever in bow sights was the introduction offiber optics. The light gathering capabilities of fiber optics made traditional metal pins obsolete. However, the use of fiber optics brought on a new set of problems for the archer. In bright daylight pins can get too bright resulting in a halo around the pin that interferes with the target. The solution? Black Gold FlashPoint’s exclusive PhotoChromotic shell that surrounds the fiber optic pins and automatically changes color based on available light. In low light conditions the PhotoChromatic shell turns clear allowing your pins to gather maximum light. In bright conditions the shell turns purple blocking UV light so your pins don't get too bright. No halo, no target interference. Ask any bow hunter and they will tell you dawn and dusk are the best times to hunt. Obviously, this is when light is at a premium. And, this is when it is critical to see the pins on your bow sight. Black Gold’s revolutionary SkyCoil puts the fiber optics where the light comes from, at the top of the sight. The result is a bow sight that is 300% more efficient at gathering and transferring light than other wrapped fiber bow sight. So, in low light conditions, early in the day, late in the day and especially while hunting from a blind, you want to maximize the brightness of your pins. Nothing does this better than Black Gold's SkyCoil Technology.