outstanding functionality and great price [SEP] this is not actually like the big bulky waterpiks that i remember it is just the right size and it is a dual comboit also comes with the portable waterpik that you can take with you when you travel dual voltage update i loved this flosser so much that i recommended it to my brother and discovered that the other models have an on off button on the device handle this feature would be a nice to have as this model you have to depress the button and hold it to keep the water from spraying out when you are moving it back to the base holder and transitioning to turn the unit on or off