The Power Play Teasing Tickler is comfortable, both where you really want it to be and in your hand. Users can find a speed to fit their needs thanks to the three-speed shifter. You know it's powerful because it required 4 AAA batteries. These are not included. One of the best aspects of the device is the shape and design of the controller. It is small enough, at just under 3 inches long, to be discreet in transportation.