What is WATERPIK ExpressWirelessOralIrrigator WF-02? WATERPIK Express Wirel...What is WATERPIK Express Wireless Oral Irrigator WF-02? WATERPIK Express Wireless Oral Irrigator WF-02 deeply cleans teeth and mouth. Lightweight and portable battery operated design, so it does not need to be plugged into the mains, making it ideal...more