... on , hang in the christmas tree,add more atmosphere commodity flash boxspecification 5*5cm(size can be customized)shape: squarematerial: ... souce :Led lightapplication: outdoor&indoor ribbon color: red,orange,yellow,green,purplefeatures: 1, have flash effect in sunshine or at night ... external power supply ,can freely match 5,send out dreamlike seven color rays,add more festival atmosphere for holiday"