This product is a generic replacement. It is not an original.

Perfect compatibility: CALLYSONIC brush heads are compatible only with Oral B iO 2/3/4/5/6/7/8/9/10 series electric toothbrushes.
Gentle care: Made with ultra-soft bristles that protect teeth and gums, providing a superior yet gentle clean.
DEEP CLEANING: Specially designed bristles reach deep between teeth and remove plaque, ensuring a safe and beautiful smile.
Easy installation: Simply remove the old brush head and insert the new one—it's simple and hassle-free.