Anti-microbial bristle shaped (Helps keep bristles cleaner between brushing.) (Oral-B Complete Action with Anti-Microbial bristle protection inhibits microbial growth that may affect the bristles for up to 90 days. The bristles do not kill bacteria in the mouth or protect you against disease. Always clean this product thoroughly after each use.) Battery included. Complete Action replaceable brush head. Two Cleaning Actions: Rotating PowerHead loosens and whisks away plaque from surfaces, gumline and back teeth. CrissCross Bristles reach deep between teeth to lift out and sweep away plaque. Handle made in Mexico. Replacement head made in Germany.