Light-up timer Less mess suction cup Star Wars theme 1 Minute Light-Up Fun Soft Bristles Less Mess Suction Cup Ready Go Brush - Lightup Timer Toothbrush ADA Accepted Firefly toothbrushes are fun to use and help create good oral care habits at an early age. Our Firefly Ready Go Brush flashes for at least 60 seconds, the dentist recommended time for proper cleaning of each row of teeth. To encourage brushing, the green light flashes for 30 seconds, the yellow light flashes for 30 seconds, and red light flashes for 5 seconds so you know when to change rows. Batteries included. Suggested Use: Brush each row of teeth for 1 minute. Brush twice per day. When light no longer flashes, it is time to change your brush (Approx. 3 months).