Oral-B, CrossAction Clinical Power Toothbrush, Black, 1 Toothbrush

Replace your brush head every 3 months to maintain a superior clean.*

Replace brush head every 3 months or sooner if brush head becomes worn or loose due to damage.

If you need to change the batteries, open the lid as shown in the picture. Clean the area and the rubber ring underneath the cover. Insert two 1.5 V type AA (LR 6) batteries following the marked polarity.

*vs. a regular manual toothbrush