This clock was created using a recycled circuitboard from some sort of film processing equipment, and comes complete with a PC hard drive platter utilized as the working pendulum bob. The clock face is a Laser disc and another PC hard drive platter. This clock has a quartz clock/pendulum movement and runs on 2 AA batteries, included. This clock measures 12" W x 26" H. Since these clocks are made from recycled parts, there will be signs of use and age. All parts are thoroughly cleaned. It will make a great conversation piece on your wall or a great gift for that person you know, who is so hard to shop for. Thanks for looking.