Works great, no problems, fantastic price
I have been using this for 4 months now and have had absolutely no problems.  I read a lot about problems others had had with getting water inside the battery compartment but that is not an issue at all for me.  These previous people must have been fulling immersing their brushes in water as I can not figure out how else they get the batteries wet.  I use it just "normally" and the battery area never ever gets web.  There is also an oring seal to make sure water does not get it.  I use 900mah rechargeable batteries and they last about one month for each set. Bottom line: works great, no problems and it is inexpensive - buy it!!
Rating: 5 stars