Bacteria guard bristles. No. 1 used by dentists worldwide. Bacteria guard bristles help keep your brush clean for up to 3 months (Inhibits microbial growth that may affect the bristles. The bristles do not kill the bacteria in the mouth or protect you against disease. Always clean the product thoroughly after use). Does Not Fit: Pulsonic. 3D White battery. Complete battery. Pro-health battery. 1 Floss-like clean (when used on Pro2000 and up handle. Does not replace flossing) for healthier gums. 2. Bacteria guard bristles help keep your brush clean for up to 3 months (Inhibits microbial growth that may affect the bristles. The bristles do not kill the bacteria in the mouth or protect you against disease. Always clean the product thoroughly after use). www.oralb.com. www.oralb.ca. www.pg.com. Customer service number 1-800-56-OralB. Made in Germany.