Note: This product is easy to install, but if you don't know how to install, welcome to send you the user installation manual. Description: This is a customizable color rainbow clock, each digit can be customized with your favorite color or set to different aurora effect color gradient, each segment of each digital number in tube shape is in gradient, The clock can display all colors of the rainbow. The large digital display makes the color display more abundant, and the built-in 13 menu settings can be set to different functions and effects. Features:Ultra-large inch digital display; 4 colonies show special effects; 6 different animation switching effects to choose from; 7 kinds of time digital change effects are available for you to choose; Customizable color for each number, built-in 13 different color options (white, red, orange, yellow, light green, dark green, water green, cyan, light blue, navy blue, purple, pink, light red); Can be set to all color automatic gradient effect, built-in 5 kinds of Aurora rainbow color self-gradient effect; Adopt high brightness 5050 full color LED design; touch button settings menu (with audible feedback and LED backlight); 4 At the level brightness adjustment function, built-in photoresistor, can automatically adjust the brightness according to the ambient light, can also determine the brightness; 6-level information switching time, you can set the display time of temperature, date, week and other information according to your preference; Voice-activated wake-up function, tapping on the desktop, or tapping your hand to wake up the display; Countdown function, countdown finishes buzzer to sound reminder; You can set an alternate display of time, temperature, date, day of the week, or set the display of time only; Adopt DS3231 for RTC, built-in temperature-compensated crystal oscillator, ultra-high precision, can be put in CR1220 backup battery to prevent time data loss after power failure; A timed alarm that automatically turns off after two minutes of tweeting or is turned off by touching a button. Digital LED Clock Kit only, other accessories demo in the picture are not included! Specification:Parameter Settings:1. Time: the switch key (triangle symbol key) modifies the flashing parameter value and sets the key (circular symbol key) to specify the modification2. Date: the order of modification is: year-month-day3. Alarm: turn on-on the alarm and enter the alarm time setting; Disable-disable alarm4. Format Settings:Time (Hour Format): 24h-24 time mode; Time mode 12h-12Date (date format): M-DD: monthly mode; DD-M: Day ModeTemp (temperature format): c-degree Celsius; F-fahrenheit DC Transformer: 5V/500mA - 1000mA (Not Included)Dimensions: 20x 8cm/7.87x3.15inchColor: As Shown in the PictureQuantity: 1 SetNote:1. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 x LED Digital Clock Kit (Without Retail Package)