NOTE: Assembly with a soldering iron is required. Solder and soldering iron are not included. 3D LED Christmas Tree soldering kit — includes an illustrated assembly manual and all the components needed to build the ultimate Christmas gadget! Intermediate Skill Level - recommended for those who have already soldered a few beginner level kits. You will have to solder more through-hole components, and there might be some tricky ones. Comes with 16 flashing red LEDs, along with extra green and yellow LEDs to customize your tree The battery doubles as a stand so you can display your finished project on a desk, table, or other flat surface Power supply: 9V battery, not included The Whadda WSSA130 3D LED Christmas Tree intermediate skill level soldering kit includes an illustrated assembly manual and all the components needed to build the ultimate Christmas gadget! Once assembled, this three-dimensional Christmas tree with 16 flashing red LEDs will add some holiday cheer to your office or home. NOTE: Assembly with a soldering iron is required. Solder and soldering iron are not included. This product is similar to Velleman part number: MK130Skill Requirements:Coding skill level: noneElectronics skill level: noneMechanics skill level: 1Soldering skill level: 2Specifications:Low power consumption: 8mA Power supply: 9V battery, not included Will operate on 12VDC (e.g. in cars, external power supply, etc.) Dimensions: 3.1" x 3.5" x 4"