You start with a 10" circle of orange glass and then you had smaller circles of steel blue glass. The result is a circles with bubbles on the edges. Next you have to set it up to make it a clock. This includes and indent to hold the mechanics in place and drilling a hole in the glass for the hands of the clock to connect. You read that right. DRILL a hole in glass. The clock gets power from a AA sized battery inserted in the back. The end result is a very modern stylish clock for your wall. Ready to hang from your hook.