Philips Sonicare 3100 Series Sonic Electric Toothbrush - Black

The brush head replacement reminder will alert you when it's time for a new one. Typically, it's every three months.

The battery can last up to 336 hours.

Yes, you can use any type of toothpaste.

The Easy-Start feature gradually increases the brushing power over the first 14 uses to help you adjust to the electric toothbrush.

Brush twice a day for two minutes each time, as recommended by dentists.

The pressure sensor alerts you when you are brushing too hard, helping to protect your gums and teeth.

Yes, the handle is waterproof and can be rinsed under running water.

The warranty period is two years.

Ensure the toothbrush is fully charged. Clean the charging contacts on the handle and charger. Try a different outlet.

Make sure you are using genuine Philips Sonicare brush heads. Check for any obstructions preventing the brush head from clicking into place.

Charge the toothbrush fully. Replace the brush head, as worn bristles can reduce cleaning effectiveness.

Reduce the pressure applied while brushing. The pressure sensor is designed to alert you when you brush too hard.