The device has a small, sometimes difficult to locate pressure switch embedded below the silky skin of the device on the outside of larger of the two bulbs, near the top. It is marked by a small "nub", similar to what you feel on a keyboard "home key" ("F" and "J" keys).
- Press and hold to turn the device on to ready mode; there will be a flashing red light below the "nub". Press briefly (click it) to start the vibration.
- Press briefly again (and again) to change between numerous vibration modes. More conveniently, use the remote to turn the vibrations on and to change the pattern.
- Press and hold to shut off; the red light will turn off.

Use it solo, with other toys: anal/vaginal, or with a partner during sex. She uses it in between sex, by herself, though the on and off button gives her issues. (only drawback, but not a show-stopper once you get the hang of it)Ridges on the underside of each bulb seems to be there to help hold the toy in place. As for noise, it is like a loud phone vibration outside and more muffled when inserted and pressed against the skin.

Charging toy is done by a stereo jack looking plug on one end with a standard USB connector on the other. We use the included cord on a standard phone charger "brick". The jack end inserts into the large bulb end. Remote is one AAA battery.

We had a favorite strong vibrator for years that we had to finally retire and several others we've tried just didn't have the power; this baby is STRONG! This isn't a subtle buzzing, but powerful vibrations that stimulates inside AND out; well sized to position at the G-Spot and clitoris simultaneously. She plays with the various patterns, but if you miss the one you want, you have to cycle all the way through to get back to it.

Use with your male partner during intercourse for extra stimulation for her and for him. Can be especially good on his penis when he enters from behind as it stimulates his frenulum as he thrusts.

From tip of the larger bulb to the apex of the curve connection the two bulbs is about 3.5 inches, 1 inch thick and 1.25 inches wide. Smaller bulb is almost 1 inch wide and .75 inches thick.