2Do not handle charger with wet hands.Do not immerse in water or other liquid.Do not reach for a product that has fallen into water.Unplug immediately.Do not plug this device into a voltage system which isdifferent from specific voltage range.Do not use if you have trauma on your tongue or in yourmouth.lf you are in dental treatment, you should consult yourdentist before using this instrument.Do not direct water flow under the tongue, into the ear,nose or other delicate organs.lt's normal phenomenon that caused gum bleeding forthe first time use. lt is recommended to start from a lower pressure level.Never be left unattended when plugged in.Closesupervision is necessary when it used by, on, or nearchildren or invalids.Check the charger cord for damage before use.Keep charger and cord away from heated surfaces.Use this product only as indicated in these instructionsor as recommended by your dental professional.