SPECIFIC DESIGN: Specifically designed Oral B electric toothbrushes for a younger demographic to be gentle and suitable for age 3 plus, making it a perfect electric toothbrush from Oral B ROUND BRUSH HEAD: Round Oral B toothbrush head, sized for the small mouths of young ones aged between 3-5 and 6-12 GENTLE ON GUMS: Gentle on gums with the extra soft bristles of this children's electric toothbrush, ideal for those aged between 3-5 DENTIST RECOMMENDED: Dentists recommend changing the Oral B toothbrush heads every 3 months to maintain optimal cleaning efficacy for power toothbrushes COMPATIBILITY: Compatible with all Oral B kids electric toothbrushes, including those designed for ages between 9-12 and frozen toothbrush models