· The information below is per-pack only· Micro vibrations and tapered bristles made of soft nylon gently polish teeth for a brighter smile· Brush heads match colorful handle for super sleek look· Easily snaps on for convenient replacement· Compatible only with Philips One by Sonicare Handles· Dentists recommend replacing brush heads every 3 months· Subscribe & Save on genuine Philips One brush head replacements and save up to 15%.