Oxyjet Technology: Enriches water with micro fine bubbles of air to boost your oral health routine with the on-demand button you can control the water stream with precision Personalize your cleaning experience with four cleaning modes, aqua care 4 has two intensity settings: Sensitive and regular, each can be used with two nozzle water streams: Focused or rotational; Includes: One aqua care portable irrigator, one oxyjet nozzles and charging station with UK 3-pin plug.