Features: 1.MULTI DISPLAY: Digital clock comes with LCD display and LED, which shows the current date, time (24 hours), day of the week, temperature in real time, and also features a stopwatch and countdown mode. The clear screen display ensures that the clock kit is easy to read and attractive even from a distance. 2.SMD SOLDERING PRACTICE: After completing this kit, you will not only improve your soldering skills quickly, but also gain a deeper understanding of electronics. The finished project not only has all the functions of a digital clock, but also can be used as a desktop art accessory. 3.USB CHARGING: Digital LED clock is USB charged to keep it running even during power outages. Comes with a coin cell battery, powered by the coin cell to save information when the power goes out. 4.ADJUSTABLE BRIGHTNESS: Electronic alarm clock uses light control technology and the brightness can be set to automatically adjust or manually adjust the brightness. These new features are designed to provide convenience for daily use. 5.MULTI FUNCTION: Three sets of alarms: Three musical alarm settings are supported. Power saving mode: You can press the button to turn off the LED lamp when not in use to save power (5 levels of dimming). Hourly Chime: Buzzer alerts every hour. Motor Vibration: Motor vibration alert when the button is pressed. specification:Item Type: DIY Digital Clock Kit Product Material: ABS, PCB Clock Chip: DS1302 Power Supply Interface: USB C Power Input: 5V USB Power Supply Battery: 40 MAh CR1220 Button Battery (matching) Key Description: S1 Button: Enter menu bar setting, switch menu bar, data cursor shift and key confirmation function. S2 Button: Data setting function. Enter the menu bar setting, press S2 button to flash the cursor, short press the button to add one to the data, long press the button to add one to the data continuously. Date: Set the year, month, day and week. Time: Set 24 hours time, hour, minute and second. AlarmClock: Set 3 groups of alarm clock, hour, minute and second, ON/OFF to turn on or off the alarm clock. Backlight: Set the screen backlight brightness, 1-5 levels of brightness adjustment, OFF to turn off the LCD backlight brightness. PackageList: 1 x LCDScreen 1 x PCBBoard 1 x ABSCase(6Pieces) 1 x 1/4WPluginResistor(10k+2k) 1 x NTCThermistor 2 x CeramicChipCapacitor 1 x BatteryHolder 1 x Battery 1 x Buzzer 2 x Button 1 x ChipHolder 1 x DS1302Chip 1 x DirectPlugCrystalOscillator 12 x Screw 4 x FixingPost 1 x Nano3.0DevelopmentBoard 2 x SingleRowDirectPlugPinFemale Plate 15P 1 x SingleRowDirectPlugPinFemale Plate 16P 2 x SingleRowDirectPlugPin Plate 16p 1 x SingleRowDirectPlugPin Plate 15P 1 x SingleRowDirectPlugPin Plate 13P 1 x SingleRowDirectPlugPin Plate 2P NoteSelf soldering required.