It seems to work well but even the low setting seems a little strong when you start. Rather than the off/low/high switch, there should just be a momentary on/off switch to hold, and another for the strength. Overall it is okay.
I received this model for Christmas. I like it. The only thing it needs are detailed instructions on how to clean it, when to clean it, and when to replace the tips.
Thought I had ordered the recharging model which would have been better. Dental assistant recommended such treatment for those of us who fail to adequately floss. My teeth feel like they have just been cleaned after a water pick treatment.
I flossed with string floss for years. I bought this and was so pleased I bought one for my grand who has braces. She loves hers and cannot wait to floss! Very very pleased with this product