This circuit is simple and practical, with low power consumptionIt is driven by integrated circuits: fewer parts, simple and easy to understand circuitsThe pluggable design makes it easy to replace parts at any time and facilitates circuit debuggingThis kit will make your Christmas more memorable and Made of high-quality materialsOperating voltage: DC5VPower supply: 3 AA batteries or USB charger (The adapter does not includes)Colour:As ShownMaterial:Plastic+PCBSpecification: A: Without housingPackage Contents:1 x DIY Christmas Tree KitsOnly the above package content, other products are not included.Note: Light reflection 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.