This was purchased as a birthday present for the Mrs. The first time we used it I heard sounds coming from her I'd _never_ heard before, and after the first forty-five minutes or so with this amazing plaything, her gratitude was...um...intense. Absolutely the best few dollars I have ever spent. On anything. Ever.
Suggest you purchase a second one as a spare just-in-case...you really won't want to be without this thing should her passion tear it apart. After an awesome week and multiple battery replacements, we're still enjoying it (she prefers when I drive - me, too!), and it can be depended upon to rip gasps and cries of pleasure from her throat. With just a touch of Smooth & Slick, it seems to hit pretty much eveything there is to hit, and by the time we work our way to the highest setting, her entire body is involved!
(She told me the person who designed this toy should receive a medal. I couldn't agree more!)