Micro-pulsing brush head. 2 minute color change timer. 30 seconds each zone. AAA + button cell batteries included. Encourages longer, better cleaning. Fun brush with high frequency micro-pulsing action. Cleans around and between teeth. 2 minute timed lights change color every 30 seconds, signaling to brush another one of the 4 sections of the mouth. Automatically turns off after 2 minutes, dentist recommended brushing time. Available in 3 fun designs. Convenient, fully disposable brush. Non-replaceable brush head and batteries designed to last for 3 months when dentists recommend replacing your brush. Made in China.