Smooth Glass Exterior, Vivid Color 12 Diameter Show?Firefighter Support Requires one AA Battery (Not included) This Thin Blue Line American Flag Clock makes for the perfect home decoration for families who truly bleed blue. This pristine quality clock will perfectly fit in your home. The diameter is 12 inches across making it big enough to see all the way across the room. Show your support for our American Law Enforcement officers.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }