ADVPRO tncqm-tm Personalized Custom Recording Studio Microphone Neon Led Table Clock Overall size of the clock is 5.6 x 3.75 inch/ 142.5mm x 95mm The LED lights can be powered by either two AAA batteries (not included) or powered by USB power supply cable (not included) The clock runs on one AA battery (not included) For the personalized clock, ***please inform us (by sending message via amazon messenger) exactly the name you want to engrave on your clock, for example Peter/ Peter's etc Default color is shown in the first gallery picture, if you need to change to other colors (either blue, red, green, yellow or white), please inform us after payment confirmed