I got it as a gift for my girlfriend and I have to say the following. Perhaps the only product that makes my girlfriend "break" character. Once you find the right spot, it’s over. Generally, while it’s small, it’s incredible. The four stars are because of the battery; it needs charging for about an hour and lasts around 20-30 minutes. Is that enough? For us, yes. It does the job, it stains her towels and sheets, and my girlfriend is happy. Overall, give it a try, it’s not expensive and it’s definitely something different.