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Christmas Tree LED Flash Kit With Transparent Cover DIY Electronic Kit CTR-30 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). Feature: Model: Three-color light Operating voltage: DC4.5-5V Power supply: 3 AA batteries or USB charger (batteries are not included) The transparent cover thick:: 1.6mm Power supply is not included This is a DIY kit, you need to assembly it. Instruction download: Click to open Package inlucded: 1 x DIY Christmas Tree LED Flash Kit