***This is not a custom clock, the name and the default color will be the same as the first gallery picture shown*** Only one color for one clock, if you need other colors (either blue, red or green), please contact us via amazon messenger after payment made;Overall diameter of the Clock is 10 inch/ 25cm with a frame made of aluminum. The source of the light is LED light, which is bright & energy saving, lifespan is more than 100,000 hours (around 10 years if you keep turning it on);The CE clock runs on one AA battery (not included) and an AC power cord (110v to 240v) for the lights (included).