The manual could be better. a. recharging time was not explained. one hour? 5 hours? 10 hours? b. the diagrams of the pics was not clear, except for the one with the brush and the tongue cleaner. I suggest they be color coded for those of us who have reached a "certain age".
We bought this because we wanted something small and didn't want a piece of equipment sitting on our sink. The reservoir holds the right amount of water. The battery lasts about a week before needing to be recharged and 3 of us use it twice a day. I'd recommend this purchase.