Review title is It's a keeper [SEP] This little unit has the power all right-it felt like needles hitting my gums.  I used the soft setting and it was painful.  Also, the water tank ran out in less than 15 seconds so I had to refill three times for the first use.  I will try it again and hopefully, it won't hurt.  Otherwise, it may be returned to the company.  Oh, and it arrived in an envelope, not a box.  The  inner box was a bit squished.  No other apparent problems, though.<br />After using this little unit for a couple of weeks, I have decided I like it after all. You do have to refill it a couple of times if you are like me and take your time. It has kept its initial charge from the second day I had it for at least 2 weeks now, without recharging! Very powerful-almost too strong for me at first, but I adjusted to it.<br />It is made in China-which I would prefer an American made product but this is what I could afford.  It seems sturdy enough and definitely powerful enough to do a good job.