Control the speed and intensity of the vibrations.You can use it during sex with a partner, or play solo!It's great to be able to control the vibrations during solo sex. You can also use it as foreplay with your partner before getting down in bed together. If you're feeling adventurous, try playing with this toy while out in public--no one needs know what you're doing! The remote control means that no matter where they are, they'll always be able to change things up if necessary (or just turn things up!).These vibrators controlled by app has no need for batteries because there is no motor inside; instead, power comes from whatever device it's connected too (such as an iPod Touch). This means no unexpected interruptions from dead batteries at inconvenient times!