JTF F100 Water FlosserPowerful cleaning If you don't like dental floss, our electric water flosser uses powerful water flow to deep clean between teeth and along the gum line. IPX7 Waterproof IPX7 waterproof function, you can use it with confidence whether in the shower or at other times. Big water tank The large capacity water storage is enough for full mouth cleaning in 60 seconds, eliminating the trouble of frequent water refills. Up to 40 days of battery life The