The one touch wonder is a strong, buzzy egg vibrator. It takes slightly unusual batteries ( N batteries), but they are not too hard to find in Wal-Mart or a pharmacy. This toy is waterproof and it is smooth and velvety. It is also very affordable, and it is a very good deal for it's price. Due to the strength of the vibrations, if you are sensitive to vibrations this may not be a good toy for you. I love this toy and I think you may love it too!