Didn't Work.I looked forward to using this for a bit of fun, but upon removing the seal around the batteries and closing the bullet, the vibration was too weak. Also, I couldn't seem to turn it off by clicking on the button. I could only turn it off by removing the batteries. I haven't gone out to buy some more batteries for it as I've lost interest, but perhaps my bullet was faulty. Good to read through the reviews and see that it has worked for others - I guess I wasn't as fortunate :(