This clock was made from an old magnetic tape reel that was headed for the trash heap. It is approximately 7" in diameter and comes complete with a new quartz drive and runs on 1 AA battery, included. This is not a photo of the actual reel, but will be practically identical. Depending on the condition of the reel, you may receive side 1 or side 2, which ever side is cleaner. It will make a great conversation piece on your wall or a special gift for that geek or audiophile you know who is so hard to shop for. Thanks for looking.