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A: Your rechargeable battery might be empty. Please make sure to charge the rechargeable battery fully before using.

A: Your ION-Sei toothbrush’s head might be not attached properly. Please try to remove the brush head, then again it correctly and attach firmly as far as it will go.

A: An electric toothbrush works differently than an ordinary toothbrush. If you are a first user, take some time to get used to your electric toothbrush. Please follow a brief period of use. This effect should no longer be felt.

A: It’s a normal automatic function, information to change quadrants (see the page 10 of instruction manual).

A: It has no charging current. Please check whether both USB cable plugs are mechanically secured. Plug the charger into the socket. If the USB socket from a different device is used, switch the device on.

A: It might be a charger or rechargeable battery faulty. Please have the charger checked by a specialist dealer or contact us.

A: Your ION-Sei toothbrush should last 2-3 weeks when standard brushings are 2x/day with a fully charged battery. You do not have to charge your ION-Sei toothbrush on a daily basis.

A: We recommend you to replace your ION-Sei brush head after 3 months of use. Based on brushing twice a day for 2 minutes each session.