A sleek and very functional and pretty device, especially when it comes to discreet and space-saving appearance. Very ergonomic to use. Tank size, despite the extremely small amount of water for more than a cleaning passage sufficient. Surprisingly strong purging pulse. The positioning of the nozzle to the tooth must therefore be exercised and shall be precise, to avoid being perceived as unpleasant. The cleaning action of this unit I rate better than that of a normal Waterpiks. Very long battery life - in short trips no charger needed. All around an apparatus, which is fun.