Up to 180% more effective than floss for healthier gums QUAD STREAM TIP - Creates four wide streams of water for a thorough clean between the teeth and along the gum line. PULSE WAVE TECHNOLOGY - Gentle pulses of water guide you from tooth to tooth so that you won't miss a spot. WHISPER QUIET DESIGN - Engineered for a discreet clean, so you get great results without disturbing others. 2 flossing modes, 10 intensities.