The doctor advised me to use it after my gums inflamed. I bought it, at first it was uncomfortable, but after a week I got used to it. The tank is small, but the tap is at hand, it takes 5 seconds to fill, for one cleaning I need to fill it 4 times (not a problem), it cleans very well, before, between the last two teeth, as I just didn’t brush and floss them thoroughly, there was a smell, now everything is perfect, it cleans with a bang! Since there is no charge indicator, I do not bring it to aSee full review