Description This led matrix clock using two black translucent acrylic to fixed up include the pcb screw screw nuts and spacing column are all black it looks mystery when it combined together it is like a Mirror when the power down The black acrylic can reduce the interference ofexternal light and that makes you can still read the time clearly even under the strong light it can shows the temperature day date birthday and important festival you can select different kinds of transition animation Or you can also select the time only mode it can also switch the Fahrenheit and Celsius by one button Manual is Here Features Highlighted LED Dot Matrix Screen Display All DIP Components to Build Black Translucent Acrylic Designed 12 24 hours mode One Alarm 5 kinds of display font optional 4 kinds of middle point turn effect optional 5 levels of brightness optional Important festival scroll display like Valentine s Day Merry Christmas and so on Switch the Fahrenheit and Celsius by one button Birthday Remind function shows Happy Birthday when the date is coming 4 kinds of transition animation select can change the time temperature data and week Or time only mode Using real time clock chip data is not lost when power off with the backup battery backup battery not include in the kit 5V USB cable power supply Dimensions of the clock 112mm x 62mm x 18mm Color Options red green blue white Function Long press the Confirm button Left key to enter or exit the menu functions l