The ASP introduces a new technology to personal lighting products. It is bright, reliable, and conveniently clipped. The Sapphire will become your constant companion. The blue Sapphire Crystal producesa high efficiency, non-deteriorating solid-state beam. It provides soft illumination with a 180' viewing radius that is visible over one mile. This is a lighting system that is so advanced that it is Guaranteed! A Crystal and Batteries for a lifetime of use!