It''s diy kits. Need to solder by yourself.
Flash Christmas tree kit consists of three circuit board, allows 36 LED flash alternately, showing a Christmas tree in the space of three-dimensional profile (the night environment has better viewing).
Operating voltage: DC 4.5~5V
Power supply: 3 AA batteries or USB charger

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 2.36 inch
Height : 1.18 inch
Length : 3.94 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 0 ounce (View shipping rates and policies)

ASIN : B074466Z94