Philips Sonicare Elite Rechargeable toothbrush with 2 modes HX5910 2 modes 3 brush heads 2 travel cases - Manual (Page 11)

Cleaning
By following these simple steps, you should get years
of worry-free brushing:
1 Rinse brush head and bristles after each use.
2 Clean the brush head at least once per week, including
under the removable nut.
To remove the nut:
, Press down gently on the white area.
Avoid using sharp objects to push on the seal as this may
cause damage.
, Pull the nut up over the top of the brush head
To replace the nut, slip the nut over the brush head shaft and
pull until it clicks back on.
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