While the music and colorful LEDs provide fun and entertainment, the white LEDs help you look closely at and care for your back teeth or chewing ridges. Made of toxin-free ABS, the DuPont nylon brushes provide highly efficient cleaning with 22,000 brush head movements per minute. To prevent children from accessing the batteries, the safety guard provides adequate security. The batteries can thus be easily installed and removed using only a screwdriver. Thanks to its advanced technology and entertainment value, the Bubble Brush makes brushing your teeth a pleasure. With the 2-minute auto timer, Bubble Brush helps you to keep the teeth cleaning time recommended by your dentist. In addition, the 30-second interval reminds you to clean each area of the mouth. The cute wave-shaped holder for the electric dolphin toothbrush completes the design.