Features:1) When you push the button, it can light up2) Round light (when it looks like tunnel) 3) 6 different functions (Flash and change, Fade to another color, Still, Red flash,Blue Flash, Green Flash, Off) or any combination4) It is a good promotion gift because it is novel and creative5) Include button batteries5) Material: plastic6) Size: 47 x 15 mmPacking:1pc/blister card, 50pcs/inner box, 200pcs/carton producing area:China payment:T/T, L/C