The waterpik 662 is the black version of the 660 and through that almost 50 dollar cheaper with the same technical details. It has good water jet power which has several strength adjustments. The visible water container makes it really simple to top u...  Read More

Water floss is a realy importand part of cleaning the teeth. Makes flossing a breeze. My gums are really firm. I have sensitive gums to chemicals.

It really cleans my teeth. Plus it saves on dentist bills. The waterpik is exactly what i need to clean under a new bridge on two implants. The variable setting of water pressure is a plus and removes most food residue between teeth.

It cooks itself over a long time until the circuit becomes open. Less than 3 months of use.

Internal potted transformer was not designed/selected properly. The internal adaptor is extremely low quality and the unit has planned obsolescence.