Description: DIY soldering practice kit with the Xmas tree shape when assembled, it's a fun creative gift and beautiful decoration in the season Eletronic practice kits need users to finish the assemble and soldering process, PCB pre-marked components name and detailed English user maunal, enable the process easier for DIY beginner and science school electronic learning project Chirstmas Tree assemble kits have 36pcs 7-color LED diode make up the flashing light when power on, please watch the vedio of finished works in the end of product pictures DC 4.5V-5V working voltage can be x AA battery or USB power adapter directly (Comes with the battery holder and USB cable) Auto-spread/ close up Design - Assembling this tree only requires few steps. All branches will drop to the designed place after the tree set up, and will close up automatically for storage. Specification: Material: Plastic Product size: Dimensions: 60 x 136 x 60mm / 2.36 x 5.35 x 2.36inch(L x W x H) Operating voltage: DC4.5-5V Package Includes:(2 Pack) 1 x Christmas Tree LED Flash Kit