Thats no moon, its a *DING* *Pew pew* – Just simply turn this death star timer to start your planetary destruction…in about 30 minutes when the cookies are done. Batteries Included, and are easy to replace along the bottom. Lights up when timer goes off, and there is also a test button to fire at will! Important Inscructions: To monitor any time below 5 minutes, wind the timer beyond the 15 minute mark and then back down to the desired minute(s). The coil must be engaged to operate.