This variable speed micro clitoral massager is one of the best available for the money. It can also be used as a replacement for the vibes that come with our silicone vibrating dildos. Uses 3 watch batteries (included). You don't wanna carry around a large vibrator or massager no problem with the micro massager you won't have to worry about size or weight. This micro massager only weighs .04 LBS, you can't get any smaller for a vibrator or massager than this.