The mystique of the Crop Circle phenomenon has been recreated by laser in stunning detail. The designs light up in brilliant changing hues of red, blue and green. Lighted or not, with its fine jewelry appearance, this product can be proudly worn by anyone. The unique design of this medallion features a removable hook piece allowing the Medallion to be worn as a pendant with a chain or attached to clothing using a tie tack. The medallion is 1.5" diam x .5" thickness, with a 23" chain. Uses 2 replaceable CR1220 batteries (included).