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 the hourly 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 bullfighterColor display:4 nixie tube color optionalEach nixie tube color is optional4 nixie tube color cycle change (default)4 nixie tube colors change randomlyThe color 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 displayColour:multicolorMaterial:plasticPackage Contents:1 x Digital Tube DIY Clock KitOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.