Good vibrations!
It has a couple of settings for sonic vibrations.  One acts much like the top brand sonic toothbrush and one is more like a sonic shake - which I find myself using more often.  It really shakes!  I like the water flosser feature but as another reviewer mentioned, it could have a little more pressure.  But if you have overly sensitive gums, it does not hurt them at all.  The toothbrush has a small tube that connects to the bottom and goes through a small plastic part that nicely hooks to the top of a normal bottle of water and extends down to the bottom so you can easily use a bottle of water to floss with.  Refill and do it again if needed.  So far, the battery charge has lasted a week on one charge.  The rubber charge cover needs to be fixed so it will remain in place better.  But overall, I like the toothbrush.
Rating: 5 stars