Description: Trick egg,crazy egg, novelty gift 1)light control. 2)weight:0.06/pc 3)size:4.5*4.5*6.5cm 4)power:3*AG13 button cell battery Do you want you freinds be shock, buy one, put it to his refrigerator. When his open the refrigerator. The egg will dancing for him or her. Very funny.