This is a DIY soldering practice project. You need to use a soldering iron to manually solder the electronic components. After completing the soldering and aembly, you will get a cool clock/small alarm clockThe electronic clock has an alarm function. You can set the alarm timing for hours, minutes, and seconds. As a clock, it has 13 kinds of exquisite and cool led animation effects, which simulate the movement of the clockThe electronic clock has a photoresistor and a temperature control sensor, which can be set to turn on/off the light control function and display/turn off the temperatureThis is also a great gift choice for family or friends. They will definitely appreciate your hand-made heart. At the same time, parents can also instruct their children how to weld through the electronic welding kitWhat You Get: 1 x Electronic Alarm Clock Soldering Kit Case and battery Not Included. Kitten clock component list Name Package Position Of Welding Quantity STC15W408AS SOP28 U1 1 DS1302 SOP8 U2 1 1K resistance 805 R3-R11 10 10K resistance 805 R1, R2 2 10pf ceramic capacitor 805 C1, C2 2 32.768KHz crystal oscillator Plug-in Y1 1 S9012 SOT-23 Q1 1 Photoresistance Plug-in Photosensitive 1 Thermistor Plug-in Thermal 1 buzzer Plug-in U3 1 CR1220 battery holder Patch BT1 1 T-type power socket Plug-in J1 1 3*6mm touch button Patch Setting, adding key 1 Digital Tube Plug-in DS1 1 3mm red red LED Plug-in 15 3mm blue hair blue LED Plug-in 55 T type power cord 1