To replace brush head: Twist counterclockwise 90 degrees and pull away from handle. Slide on new head and turn clockwise 90 degrees until arrows are aligned. To replace batteries: Turn and pull down handle base. Replace with two new AA alkaline batteries only! Package includes: Four AA batteries. When replacing batteries, follow symbols for correct positioning. Operating: 1. Slide switch up to turn on brush. 2. Gently glide bristles back and forth against the teeth/gum surfaces without pressing hard for about two minutes while brushing your teeth.
Always refer to the actual package for the most accurate information