It''s diy kits. Need to solder by yourself.
Working voltage: DC4.5-5V
Finished Dimensions: 60mm length *60mm width *136mm height
The flash Christmas tree kit consists of a combination of three circuit boards, the user through their own welding assembly, so that the 36 LED alternating flashing, in the space of a Christmas tree in the outline of the three-dimensional
English instruction dl from links: http://pan.baidu.com/s/1gdCZbl5

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.54 inch
Height : 0.79 inch
Length : 5.12 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 2.08 ounce (View shipping rates and policies)

ASIN : B017R7T8AQ