Review (1/5): Love it but second one didn't last a month
I love this toothbrush. I bought this battery one when the regular one didn't hold a charge after only a year. This one works just as good and the batteries last a long time. (I change them after two months) for those of you that are getting water in the unit there are rubber covers that go over the toothbrush head to keep water out of the threaded area. Not sure where i got them but you could try a google search. My problem was that it started to go off during use and only run intermittently. It's was my second one and it died within a month. I was going to buy another one any way when I found out that Sonicair will replace it.
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My theory and my experience as a electrical service technician is that they have bad solder or electrical connections and since this device vibrates its very possible to shake or brake these connections. It's really too bad it's a very good device but they need to up their quality control on this model and the more expensive ones.