"Details:Function setting: long press set to enter the setting mode, press the UP key to change the parametersTime setting: After reset, it is 7:59:59 on January 01, 2019 (seconds are not displayed, the week is automatic)Time: 24-hour system (automatic), 12-hour system.Hourly reminder: You can set the hourly reminder and turn off thehourly reminder at night. (Default 7 o'clock to 21 o'clock)3-way alarm clock:Alarm 1 is set from 7:00 and is turned on by default.Alarm 2 is set from 7:00 and is off by default.Alarm 3 is set from 7:00 and is off by default.Alarm clock control:Monday to Sunday alarm work (default)Monday to Friday alarm workControl brightness:Auto brightness (default)Fixed high brightnessFixed medium brightnessFixed low brightnessTemperature display:Celsius (default)Fahrenheit3 kinds of music:To Alice (default)Ode to joySpanish bullfighterColour display:4 nixie tube colour optionalEach nixie tube colour is optional4 nixie tube colour cycle change (default)4 nixie tube colours change randomlyThe colour of a single nixie tube changes randomlyTime correction: correct time errorDisplay mode:Show time only (default)Time-temperature cycle displayTime-date-week cycle displayTime-date-day-date cycle displayParameter:Chip: IAP15W413AS, DS1302Shell material: transparent plasticPower supply: USB power supply DC5VSize: 140*32*40mmPackage Include: 1Set LED Electronic Clock kit DIY 4 Digital Tube Multicolor with Clear Case DC 5V"