Specification BatteriesRequired : 1 Brand : HUAGZIMO BulletPoint1 : 【Product Introduction】: The adjustable speed flow lamp soldering practice kit uses a CD4060 assembled oscillator and controls the flashing of the light-emitting diode through CD4017, and adjusts the speed of the flow LED through an adjustable resistor. BulletPoint2 : 【With English Installation Instructions】: This electronic kit is not a finished product, it need to be soldered by yourself. You can get detailed and clear instructions by scanning the QR code that comes with the package. If you have any questions, please contact us first for professional help. BulletPoint3 : 【Great Soldering Science Project】: This soldering DIY kit help you understand the basics of working with printed circuit boards and become familiar with a variety of electronic components, and practice soldering skills enjoyably for you and your kids, or students, or DIYers. BulletPoint4 : 【Easy to Assemble】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. And you can refer the marks on PCB board to soldering each component. If it can't work after soldering, please contact us for support. BulletPoint5 : 【Perfect After-Sale Service】: Please read the User Manual before installing.If any components are missing, please contact us for replacements. Color : 16 Lamp Christmas Tree ExternallyAssignedProductIdentifier : 9588073570749 ExternallyAssignedProductIdentifier1 : 717373553254 ExternallyAssignedProductIdentifier2 : 0717373553254 FinishType : Finish HeatingElementType : Ceramic IncludedComponents : Adjustable Speed Flow Light IncludedComponents1 : Soldering Iron IncludedComponents2 : Solder Tip ItemName : Soldering Practice Kit Adjustable Speed Flow LED Light Soldering Projects Teaching Supplies DC 4.5V DIY Electronic DIY Kits HUAGZIMO ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 5.9 inches ItemPackageDimensions_Width : 3.9 inches ItemPackageQuantity : 1 ItemTypeKeyword : soldering-stations Manufacturer : HUAGZIMO Material : Metal ModelName : Adjustable Speed Flow Light ModelNumber : Adjustable Speed Flow Light NumberOfChannels : 1 PartNumber : Fafeicygatmbhgo1q PowerSourceType : dc ProductDescription : 【With English Installation Instructions】: This electronic kit is not a finished product, it need to be soldered by yourself. You can get detailed and clear instructions by scanning the QR code that comes with the package. If you have any questions, please contact us first for professional help. 【Great Soldering Science Project】: This soldering DIY kit help you understand the basics of working with printed circuit boards and become familiar with a variety of electronic components, and practice soldering skills enjoyably for you and your kids, or students, or DIYers. 【Easy to Assemble】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. And you can refer the marks on PCB board to soldering each component. If it can't work after soldering, please contact us for support. 【Perfect After-Sale Service】: Please read the User Manual before installing. Our policy is to make our customers happy. If any components are missing, please contact us for replacements.