The Oral-B Pro Precision Clean brush head adapts perfectly to every tooth and removes up to 100% more plaque than a manual toothbrush. The original brush heads from Oral-B are designed with X-shaped bristles that can now clean areas that regular bristles cannot reach. The green indicator bristles change color to yellow over time, depending on individual usage, indicating the optimal time to replace the brush head for 100% cleaning power. Compatible with all rechargeable Oral-B toothbrushes, except for Pulsonic and iO.