The bristles of the Oral-B Pro Precision Clean toothbrush head remove plaque more thoroughly, tooth by tooth, than Oral-B manual toothbrushes. 
The original Oral-B toothbrushes with the new X-shaped bristles also successfully clean places that round bristles cannot reach.
To ensure 100% cleaning efficiency, the toothbrush head wear indicator changes the colour of the bristles from green to yellow, indicating that it's time to replace them.
Guaranteed to work with all Oral-B rechargeable electric toothbrushes, except Pulsonic and iO toothbrushes.