The Oral-B Easy Clean battery powered toothbrush is designed for a better clean. The Dentist-Inspired Round Brush Head wraps each tooth for the Deep Clean it deserves. Oral B is the #1 dentist recommended toothbrush brand worldwide, so take this battery powered toothbrush on-the-go with you - just replace the batteries when needed. Replace brush head every 3 months or sooner if brush head becomes worn. Do not use on children under age 3.