These clocks come in two shapes (round and square) and two sizes. Each clock has a keyhole at the back for easy hanging on a wall. They're made from an acrylic material that looks like glass but is more durable and sturdier. This one is printed from my original piece titled "Los Angeles". It feels sundrenched like a hot sunny day straight out of 1984! .: Requires one AA battery (NOT included) .: Includes keyhole hanging slot for easy hanging. Clean by wiping with a soft, damp cloth