ENHANCED CLEANING: Removes Up to 100 Percent more bacterial plaque for cleaner teeth and healthier gums vs. a manual toothbrush X-SHAPE BRISTLES: Only genuine Oral-B brush heads feature X-shape bristles that clean in areas that regular ones cannot reach for optimal cleaning efficacy DEEP CLEANING: Oral-B Cross Action features unique 16° angled bristles to perfectly adapt to each tooth for deep cleaning COMPATIBLE FIT: Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic and iO toothbrushes USAGE INDICATOR: Brush head usage indicator: bristles turn from green to yellow reminding you when to change to keep 100 Percent cleaning efficacy