In order to turn this vibe on, simply press down on the bottom half of the power switch, where it says ON/OFF. Doing this when it is off will turn it on, and doing the same when it is on will turn it off. I like this design so much more than the 'cycling' variety where you have to keep clicking through settings to turn the toy off, sometimes turning it up much higher than you'd had it during use. Kudos to Doc Johnson for putting innovative controls on this model!
The vibrations are focused at the head of the cock but you do feel them all the way down the shaft, but they are very weak and barely noticeable on the ball sack, which is perfect because it prevents the numbness and tingling of the hands that can sometimes be felt using certain toys.
The fact that this toy is made of a jelly-type material also makes the vibrations much stronger as they aren't 'muffled' and I always prefer using jelly toys for internal vibrations unless I am focusing specifically on the g-spot, because for that I need a much firmer toy.
The seven settings of power are as follows:
1- Low Steady Vibration
2- Medium Steady Vibration
3- High Steady Vibration
4- Escalating Vibration
5- Pulsing Vibration
6- Faster Pulsing Vibration
7- Very Very Strong Steady Vibration