Dr. Seuss - Those Who Mind Don't Matter And Those Who Matter Don'T Mind - Custom Name Wall Clock 4.1 inches (10.5cm) -----  11.2 inches (28.5cm) Made of 3mm thick black acrylic face with high quality printed vinyl on it Clock mechanisms are EZ Quartz Sweep and RoHS Approved Non Ticking (Silent) Requires 1 AA battery (not included)