Batteries are replaceable.AAA batteries included. Use only AAA alkaline batteries; see manufacturer's usage instructions for safe handling and usage. Do not mix old and new batteries. Do not mix alkaline standard (carbon-zinc) and rechargeable (nickel-cadmium) batteries. Brush head is not replaceable. Operating Instructions: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 2 minutes while brushing your teeth. Replace brush every 3 months. Failure to do so could lead to brush head breakage and that could cause an injury. After every use, rinse brush head thoroughly. Do not use brush with damaged or loose parts.
Always refer to the actual package for the most accurate information