Oral-B iO4 Electric Toothbrush with Toothbrush Head & Travel Case, Black. Replace your Oral-B iO toothbrush head every 3 months for the best results. HEALTHY GUMS: Combines the unique round brush head from Oral-B with gentle micro-vibrations for a fresh, clean mouthfeel and 100% healthier gums in one week vs. a regular manual toothbrush.
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